Analyse de quelques problèmes aux limites elliptiques non linéaires, Habilitation à Diriger des Recherches, Université Pierre et Marie Curie (Paris VI), 25 février 2003 (zip).

Analyse de quelques problèmes liés à l'équation de Ginzburg-Landau, Thèse de doctorat, Université Pierre et Marie Curie (Paris VI), 29 juin 1995 (zip).

Methods of Operator Theory in Nonlinear Analysis, Ph. D. Dissertation, University of Craiova, 17 December 1993 (zip).

(with T. Andreescu and T.-L. Radulescu) Problem Solving in Mathematical Analysis, Springer-Verlag, New York, to appear.

(with M. Ghergu) Singular Elliptic Problems. Bifurcation and Asymptotic Analysis, Oxford Lecture Series in Mathematics and Its Applications, vol. 37, Oxford University Press, 2008.

Qualitative Analysis of Nonlinear Elliptic Partial Differential Equations, Contemporary Mathematics and Its Applications, Hindawi Publ. Corp., to appear.

(C. Niculescu and V. Radulescu, Editors) Mathematical Analysis and Applications: International Conference on Mathematical Analysis and Applications, Craiova (Romania), 23-24 September 2005, AIP Conference Proceedings Volume 835, American Institute of Physics, 176 pp., 2006 (see the Springer site).

(with D. Motreanu) Variational and Nonvariational Methods in Nonlinear Analysis and Boundary Value Problems, Nonconvex Optimization and Its Applications, Vol. 67, Kluwer Academic Publishers, Dordrecht, 388 pp., 2003 (see the Springer site).

Partial Differential Equations, Craiova University Press, 1999 (pdf).

Treatment Methods of the Elliptic Problems, Craiova University Press, 1998.

Guest Editor of the Special Issue Degenerate and Singular Partial Differential Equations and Phenomena, to be published in the Journal of Mathematical Analysis and Applications, 2008.

Guest Editor (with Hervé Le Dret - Université Pierre et Marie Curie- Paris 6 and Roderick Wong, City University of Hong Kong) of the Special Issue of Communications in Pure and Applied Analysis dedicated to the 70th anniversary of Professor Philippe G. Giarlet, 2008.

Guest Editor (with M. Iosifescu) of the Proceedings of the Seventh Franco-Romanian Colloquium on Applied Mathematics, Held in Craiova, August 30 - September 3, 2004, Annals Univ. Craiova Ser. Mat. Inform., 32 (2005).

Guest Editor (with M. Iosifescu and M. Sofonea) of the Proceedings of the Sixth Franco-Romanian Colloquium on Applied Mathematics, Held in Perpignan, September 2-6, 2002, Annals Univ. Craiova Ser. Mat. Inform., 30 (2003).

H. Brezis, Analyse fonctionnelle: théorie, méthodes et applications, Masson, Paris, 1992. Translation from French. Romanian title: Analiză funcţională: teorie, metode şi aplicaţii, Editura Academiei Române, Bucureşti, 2002 (pdf).

H. Brezis, Equations de Ginzburg-Landau et singularités, Notes de cours à l'Université Pierre et Marie Curie (Paris 6) rédigées par Vicentiu Radulescu, 2001 (pdf).

Subspaces with the 1½-ball property in Banach spaces, Ann. Univ. Craiova XV (1987), 19-25.

A generalization of a classical result concerning the duality of regular spaces, Revue Roum. Math. Pures Appl. 33 (1988), 785-788.

A study of some special functions with Lie theory, Studii Cerc. Mat. 43 (1991), 67-71.

Mountain pass type theorems for non-differentiable functions and applications, Proc. Japan Acad. 69A (1993), 193-198.

(with P. Mironescu) A bifurcation problem associated to a convex, asymptotically linear function, C.R. Acad. Sci. Paris, Ser. I 316 (1993), 667-672.

On the Volterra theorem, Ann. Univ. Craiova XX (1993), 11-12.

(with P. Mironescu) Periodic solutions of the equation -Δv=v(1-|v|²), Houston Math. Journal 20 (1994), 653-670.

Vector norms and duality properties in Riesz spaces, Annals New York Acad. 728 (1994), 330-338.

(with C. Lefter) On the Ginzburg-Landau energy with weight, C.R. Acad. Sci. Paris, Ser. I 319 (1994), 843-848.

Mountain pass type theorems for non-differentiable convex functions, Revue Roum. Math. Pures Appl. 39 (1994), 53-62.

(with P. Mironescu) On a duality theorem (in Romanian), Studii Cerc. Mat. 46 (1994), 393-396.

(with C. Lefter) On the Ginzburg-Landau energy with vanishing weight, Ann. Univ. Craiova XXI (1994), 3-11.

A Lusternik-Schnirelman type theorem for locally Lipschitz functionals with applications to multivalued periodic problems, Proc. Japan Acad. 71A (1995), 164-167 (pdf).

(with P. Mironescu) A multiplicity theorem for locally Lipschitz periodic functionals, J. Math. Anal. Appl. 195 (1995), 621-637 (pdf).

(with C. Lefter) The renormalized energy associated to a harmonic map, PanAmerican Math. Journal 3 (1995), No. 2, 1-7.

Locally Lipschitz functionals with the strong Palais-Smale property, Revue Roum. Math. Pures Appl. 40 (1995), 355-372.

(with C. Lefter) Convergence properties for general solutions of the Ginzburg-Landau energy with weight, Revue Roum. Math. Pures Appl. 40 (1995), 633-639.

(with C. Lefter) Minimization problems and renormalized energies related to the Ginzburg-Landau equation, Ann. Univ. Craiova XXII (1995), 1-13.

Nontrivial solutions for a multivalued problem with strong resonance, Glasgow Math. Journal 38 (1996), 53-61.

(with C. Lefter) On the Ginzburg-Landau energy with weight, Ann. Inst. H. Poincaré, Analyse Non Linéaire 13 (1996), 171-184 (pdf).

(with P. Mironescu) The study of a bifurcation problem associated to an asymptotically linear function, Nonlinear Analysis, T.M.A. 26 (1996) 857-875 (pdf).

(with C. Niculescu) A Saddle Point type theorem and applications to the study of some problems with strong resonance at infinity, Ann. Acad. Sci. Fennicae 21 (1996), 117-131 (dvi) (pdf).

(with C. Lefter) Minimization problems and corresponding renormalized energies, Diff. Integral Equations 9 (1996), 903-918 (pdf).

(with C. Lefter) Asymptotics for the minimizers of the Ginzburg-Landau energy with vanishing weight, Advances Math. Sci. Appl. 7 (1997), 259-271.

Sur l'équation multigroupe stationnaire de la diffusion des neutrons, C. R. Acad. Sci. Paris, Ser. I 323 (1996), 765-768.

(with M. Bocea) Problèmes elliptiques avec non-linéarité discontinue et second membre L¹, C. R. Acad. Sci. Paris, Ser. I 324 (1997), 169-172 (pdf).

(with D. Motreanu) Existence theorems for some classes of boundary value problems involving the p-Laplacian, PanAmerican Math. Journal 7 (1997), No. 2, 53-66.

(with P. D. Panagiotopoulos) Perturbations of hemivariational inequalities with constraints and applications, J. Global Optimiz. 12 (1998), 285-297 (pdf).

Multivalued problems with strong resonance at infinity and L¹ data, Revue Roumaine Math. Pures Appl. 43 (1998), 533-540.

(with M. Bocea) An eigenvalue Dirichlet problem with weight and L¹ data, Math. Nachr. 198 (1999), 5-17.

(with M. Fundos and P. D. Panagiotopoulos) Existence theorems of Hartmann-Stampacchia type for hemivariational inequalities and applications, J. Global Optimiz. 15 (1999), 41-54 (pdf).

(with F. Cîrstea) Existence and uniqueness of positive solutions to a semilinear elliptic problem in R^N, J. Math. Anal. Appl. 229 (1999), 417-425 (pdf).

(with M. Bocea and P. D. Panagiotopoulos) A perturbation result for a double eigenvalue hemivariational inequality and applications, J. Global Optimiz. 14} (1999), 137-156 (pdf).

(with M. Degiovanni) Perturbations of nonsmooth symmetric nonlinear eigenvalue problems, C. R. Acad. Sci. Paris, Ser. I 329 (1999), 281-286 (pdf).

Perturbations of hemivariational inequalities with constraints, Revue Roum. Math. Pures Appl. 44 (1999), 455-461.

(with M. Bocea and P. D. Panagiotopoulos) Double eigenvalue hemivariational inequalities with non-locally Lipschitz energy functional, Commun. Appl. Nonlin. Anal. 6 (1999), No. 4, 17-29.

Approximation of the ground state with solutions on bounded domains with corners, Revue Roum. Math. Pures Appl. 44 (1999), 845-855.

(with C. Vladimirescu) KKM techniques for hemivariational inequalities and applications, Ann. Univ. Craiova XXVI (1999), 29-42.

(with F. Cîrstea) Multiple solutions of degenerate perturbed elliptic problems involving a subcritical Sobolev exponent, Topol. Meth. Nonlin. Anal. 15 (2000), 281-298 (pdf) (ps).

(with F. Gazzola) A nonsmooth critical point theory approach to some nonlinear elliptic equations in unbounded domains, Diff. Integral Equations 13 (2000), 47-60 (pdf) (ps).

(with F. Cîrstea) Existence and nonexistence results for quasilinear problems with nonlinear boundary condition, J. Math. Anal. Appl. 244 (2000), 169-183 (pdf).

(with M. Degiovanni and M. Marzocchi) Multiple solutions of hemivariational inequalities with area-type term, Calculus of Variations and PDE 10 (2000), 355-387 (pdf).

(with F. Cîrstea) Multiplicity of solutions for a class of non-symmetric eigenvalue hemivariational inequalities, J. Global Optimiz. 17 (1/4) (2000), 43-54 (pdf).

(with L. Ignat and C. Lefter) Minimization of the renormalized energy in the unit ball of R², Nieuw Archief voor Wiskunde 5/1, No. 3 (2000), 150-152 (pdf).

(with D. Motreanu) Existence results for inequality problems with lack of convexity, Numer. Funct. Anal. Optimiz. 21 (2000), No. 7-8, 869-884 (pdf) (ps).

(with F. Cîrstea) On a double bifurcation quasilinear problem arising in the study of anisotropic continuous media, Proc. Edinburgh Math. Soc. 44 (2001), 527-548 (pdf) (ps).

(with F. Cîrstea) Existence implies uniqueness for a class of singular anisotropic elliptic boundary value problems, Math. Methods Appl. Sciences 24 (2001), 771-779 (pdf).

(with F. Cîrstea and D. Motreanu) Weak solutions of quasilinear problems with nonlinear boundary conditions, Nonlinear Analysis, T.M.A. 43 (2001), 623-636 (pdf).

(with E. Montefusco) Nonlinear eigenvalue problems for quasilinear operators on unbounded domains, Nonlinear Diff. Equations Appl. (NoDEA) 8 (2001), 481-497 (pdf).

(with F. Cîrstea) On a class of quasilinear eigenvalue problems on unbounded domains, Archiv der Mathematik (Basel) 77 (2001), 337-346 (pdf).

(with F. Cîrstea) Blow-up solutions for semilinear elliptic problems, Nonlinear Analysis, T.M.A. 48 (2002), 541-554 (pdf).

(with F. Cîrstea) Existence and uniqueness of blow-up solutions for a class of logistic equations, Commun. Contemp. Math. 4 (2002), 559-586 (pdf).

(with D. Smets and M. Willem) Hardy-Sobolev inequalities with remainder terms, Topol. Meth. Nonlin. Anal. 20 (2002), 145-149 (ps).

(with F. Cîrstea) Uniqueness of the blow-up boundary solution of logistic equations with absorbtion, C. R. Acad. Sci. Paris, Ser. I 335 (2002), 447-452 (pdf).

(with F. Cîrstea) Entire solutions blowing-up at infinity for semilinear elliptic systems, J. Math. Pures Appliquées (Journal de Liouville) 81 (2002), 827-846 (pdf).

(with M. Ghergu and C. Niculescu) Explosive solutions of elliptic equations with absorption and nonlinear gradient term, Proc. Indian Acad. (Math. Sciences) 112 (2002), 1-11 (pdf).

(with M. Willem) Elliptic systems involving finite Radon measures, Differential and Integral Equations 16 (2003), 221-229 (dvi) (pdf).

(with F. Cîrstea) Asymptotics for the blow-up boundary solution of the logistic equation with absorption, C. R. Acad. Sci. Paris, Ser. I 336 (2003), 231-236 (pdf).

(with S. Dabuleanu) Multi-valued boundary value problems involving Leray-Lions operators and discontinuous nonlinearities, Rend. Circ. Mat. Palermo 52 (2003), 57-69 (pdf).

(with M. Ghergu) Bifurcation and asymptotics for the Lane-Emden-Fowler equation, C. R. Acad. Sci. Paris, Ser. I 337 (2003), 259-264 (pdf).

(with F. Cîrstea) Solutions with boundary blow-up for a class of nonlinear elliptic problems, Houston J. Math. 29 (2003), 821-829 (pdf).

(with C. Ciulcu and D. Motreanu) Multiplicity of solutions for a class of non-symmetric eigenvalue hemivariational inequalities, Math. Methods Appl. Sciences 26 (2003), 801-814 (pdf).

(with M. Mihailescu) Ground state solutions of nonlinear singular Schrödinger equations with lack of compactness, Math. Methods Appl. Sciences 26 (2003), 897-906 (pdf).

(with M. Ghergu) Sublinear singular elliptic problems with two parameters, J. Differential Equations 195 (2003), 520-536 (pdf).

(with D. Smets) Critical singular problems on infinite cones, Nonlinear Analysis, T.M.A. 54 (2003), 1153-1164 (pdf).

(with I. Ionescu) Nonlinear eigenvalue problems arising in earthquake initiation, Adv. Differential Equations 8 (2003), 769-786 (dvi) (pdf).

(with M. Ghergu) Existence and nonexistence of entire solutions to the logistic differential equation, Abstract and Applied Analysis 17 (2003), 995-1003 (pdf).

(with M. Bocea and P. D. Panagiotopoulos) Inequality problems with nonlocally Lipschitz energy functional: existence results and applications to nonsmooth mechanics, Applicable Anal. 82 (2003), 561-574 (pdf).

(with M. Ghergu) Explosive solutions of semilinear elliptic systems with gradient term, RACSAM Revista Real Academia de Ciencias (Serie A, Matemáticas) 97 (2003), 437-445 (pdf).

(with M. Ghergu) Nonradial blow-up solutions of sublinear elliptic equations with gradient term, Communications on Pure and Applied Analysis 3 (2004), 465-474 (pdf).

(with M. Ghergu) Bifurcation for a class of singular elliptic problems with quadratic convection term, C. R. Acad. Sci. Paris, Ser. I 338 (2004), 831-836 (pdf).

(with F. Cîrstea) Extremal singular solutions for degenerate logistic-type equations in anisotropic media, C. R. Acad. Sci. Paris, Ser. I 339 (2004), 119-124 (pdf).

Finitely many solutions for a class of boundary value problems with superlinear convex nonlinearity, Archiv der Mathematik (Basel) 84 (2005), 538-550 (pdf).

(with M. Ghergu) On a class of sublinear singular elliptic problems with convection term, J. Math. Anal. Appl. 311 (2005), 635-646 (pdf).

(with D. Motreanu) Eigenvalue problems for degenerate nonlinear elliptic equations in anisotropic media, Boundary Value Problems 2 (2005), 107-127 (pdf).

(with F. Cîrstea and M. Ghergu) Combined effects of asymptotically linear and singular nonlinearities in bifurcation problems of Lane-Emden-Fowler type, J. Math. Pures Appliquées (Journal de Liouville) 84 (2005), 493-508 (pdf).

(with M. Ghergu) Multiparameter bifurcation and asymptotics for the singular Lane-Emden-Fowler equation with a convection term, Proceedings of the Royal Society of Edinburgh: Section A (Mathematics) 135 (2005), 61-84 (pdf).

(with F. Cîrstea) Nonlinear problems with boundary blow-up: a Karamata regular variation theory approach, Asymptotic Analysis 46 (2006), 275-298 (pdf).

(with M. Ghergu) Singular elliptic problems with lack of compactness, Annali di Matematica Pura ed Applicata 185 (2006), 63-79 (pdf).

(with M. Mihailescu) A multiplicity result for a nonlinear degenerate problem arising in the theory of electrorheological fluids, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 462 (2006), 2625-2641 (tex) (pdf).

(with M. Mihailescu) Existence and multiplicity of solutions for quasilinear nonhomogeneous problems: an Orlicz-Sobolev space setting, J. Math. Anal. Appl. 330 (2007), 416-432 (tex) (pdf).

(with F. Cîrstea) Boundary blow-up in nonlinear elliptic equations of Bieberbach-Rademacher type, Transactions Amer. Math. Soc. 359 (2007), 3275-3286 (pdf).

(with M. Mihailescu) Nonhomogeneous boundary value problems in Orlicz-Sobolev spaces, C. R. Acad. Sci. Paris, Ser. I 344 (2007), 15-20 (pdf).

(with M. Ghergu) On a class of singular Gierer-Meinhardt systems arising in morphogenesis, C. R. Acad. Sci. Paris, Ser. I 344 (2007), 163-168 (pdf).

Singular phenomena in nonlinear elliptic problems. From blow-up boundary solutions to equations with singular nonlinearities, in Handbook of Differential Equations: Stationary Partial Differential Equations, Vol. 4 (Michel Chipot, Editor), 2007, pp. 483-591 (zip) (pdf).

(with M. Mihailescu) On a nonhomogeneous quasilinear eigenvalue problem in Sobolev spaces with variable exponent, Proceedings Amer. Math. Soc. 135 (2007), 2929-2937 (pdf).

(with C. Vallée) An infinite dimensional version of the Schur convexity property and applications, Analysis and Applications 5 (2007), 123-136 (tex) (pdf).

(with M. Ghergu) Ground state solutions for the singular Lane-Emden-Fowler equation with sublinear convection term, J. Math. Anal. Appl. 333 (2007), 265-273 (tex) (pdf).

(with L. Dupaigne and M. Ghergu) Lane-Emden-Fowler equations with convection and singular potential, J. Math. Pures Appliquées (Journal de Liouville) 87 (2007), 563-581 (tex) (pdf).

(with S. Dumont, L. Dupaigne, and O. Goubet) Back to the Keller-Osserman condition for boundary blow-up solutions, Advanced Nonlinear Studies 7 (2007), 271-298 (tex) (pdf).

(with M. Mihailescu and P. Pucci) Nonhomogeneous boundary value problems in anisotropic Sobolev spaces, C. R. Acad. Sci. Paris, Ser. I, in press (pdf).

(with M. Mihailescu) Continuous spectrum for a class of nonhomogeneous differential operators, Manuscripta Mathematica, in press (tex) (pdf).

(with R. Filippucci and P. Pucci) Existence and non-existence results for quasilinear elliptic exterior problems with nonlinear boundary conditions, Communications in Partial Differential Equations, in press (tex) (pdf).

(with M. Mihailescu) Eigenvalue problems associated to nonhomogeneous differential operators in Orlicz-Sobolev spaces, Analysis and Applications, in press.

(with M. Mihailescu and P. Pucci) Eigenvalue problems for anisotropic quasilinear elliptic equations with variable exponent, J. Math. Anal. Appl., in press (tex) (pdf).

(with M. Ghergu) A singular Gierer-Meinhardt system with different source terms, Proceedings of the Royal Society of Edinburgh: Section A (Mathematics), in press (zip) (pdf).

(with M. Mihailescu) A continuous spectrum for nonhomogeneous differential operators in Orlicz-Sobolev spaces, Mathematica Scandinavica, in press (tex) (pdf).

(with A. Kristály) Sublinear eigenvalue problems on compact Riemannian manifolds with applications in Emden-Fowler equations, submitted.

Variational aspects of generalized eigenvalue and eigenvector problems, Proceedings of the National Colloquium on Probability Theory and Operational Research (Craiova, 1982), 164-167, University of Bucharest, Bucharest, 1982.

Hemivariational inequalities associated to multivalued problems with strong resonance, in Nonsmooth/Nonconvex Mechanics: Modeling, Analysis and Numerical Methods, dedicated to the memory of Professor P.D. Panagiotopoulos, (D.Y. Gao, R.W. Ogden, G.E. Stavroulakis, Eds.), Kluwer Academic Publishers, 2000, pp. 333-348.

Perturbations of eigenvalue problems with constraints for hemivariational inequalities, From Convexity to Nonconvexity, volume dedicated to the memory of Prof. G. Fichera, Nonconvex Optimiz. Appl., 55, Kluwer Acad. Publ., Dordrecht, 2001 (R.P. Gilbert, P. Pardalos, Eds.), pp. 243-253.

Perturbations of symmetric hemivariational inequalities, in Nonsmooth/Nonconvex Mechanics with Applications in Engineering, International Conference In Memoriam of Professor P.D. Panagiotopoulos, Thessaloniki, 5-6 July, 2002, Editions Ziti, Thessaloniki, 2002 (C.C. Baniotopoulos, Ed.), pp. 61-72.

Asymptotics of minimizers and pinning of vortices for a variational problem with discontinuous weight related to superconductivity, in Proceedings of the National Conference on Mathematical Analysis and Applications, Timisoara 12-13 December 2000, Timisoara University Press, 2003 (M. Megan, N. Suciu, Eds.), pp. 337-356.

(with M. Iosifescu and M. Sofonea), Editorial [Actes du 6-ème Colloque Franco-Roumain de Mathématiques Appliquées], Proceedings of the Sixth Franco-Romanian Colloquium on Applied Mathematics, Held in Perpignan, September 2-6, 2002, An. Univ. Craiova Ser. Mat. Inform. 30 (2003), no. 1, p. 1.

On a spectral variational problem arising in the study of earthquakes. Multiplicity and perturbation from symmetry, in Control and Boundary Analysis, Proceedings of the 21st IFIP Conference on System Modeling and Optimization, Sophia Antipolis, France, July 21-25, 2003 (J. Cagnol, J.-P. Zolesio, Eds.), Lecture Notes in Pure and Applied Mathematics Series, 240, Chapman & Hall/CRC, Boca Raton, FL, 2005, pp. 191-202 (pdf).

(with M. Iosifescu), Préambule [Actes du 7-ème Colloque Franco-Roumain de Mathématiques Appliquées], Proceedings of the Seventh Franco-Romanian Colloquium on Applied Mathematics, Held in Craiova, August 30 - September 3, 2004, An. Univ. Craiova Ser. Mat. Inform. 32 (2005), p. 1.

Bifurcation and asymptotics for elliptic problems with singular nonlinearity, in Studies in Nonlinear Partial Differential Equations: In Honor of Haim Brezis, Fifth European Conference on Elliptic and Parabolic Problems: A special tribute to the work of Haim Brezis, Gaeta, Italy, May 30 - June 3, 2004 (C. Bandle, H. Berestycki, B. Brighi, A. Brillard, M. Chipot, J.-M. Coron, C. Sbordone, I. Shafrir, V. Valente, G. Vergara Caffarelli, Eds.), Birkhäuser, 2005, pp. 349-362 (pdf).

(with M. Ghergu), Singular elliptic problems with convection term in anisotropic media, in Mathematical Analysis and Applications: International Conference on Mathematical Analysis and Applications, Craiova (Romania), 23-24 September 2005, AIP Conference Proceedings Volume 835 (C. Niculescu and V. Radulescu, Editors), American Institute of Physics, 2006, pp. 74-89 (pdf).

Comparison principles and applications to nonlinear elliptic equations, in Critical Point Theory and Its Applications, Casa Cartii de Stiinta (C. Varga, A. Kristály, P. Blaga, Eds.), Cluj-Napoca, 2007, pp. 17-52.

(with M. Ghergu), On the influence of a subquadratic convection term in singular elliptic problems, in Applied Analysis and Differential Equations, (O. Carja, I. Vrabie, Eds.), World Scientific, 2007, pp. 127-138 (pdf).

Sur la théorie de Lusternik-Schnirelman en dimension finie, Matarom, Laboratoire d'Analyse Numérique, Université Pierre et Marie Curie (Paris VI), No. 2 (juin 1992), 9-17.

(with P. Mironescu) Nonlinear Sturm-Liouville type problems with a finite number of solutions, Matarom, Laboratoire d'Analyse Numérique, Université Pierre et Marie Curie (Paris VI), No. 3 (juillet 1993), 54-67.

(with C. Niculescu) Problems at resonance via critical point theorems for non-smooth functionals, Tübingen Berichte zür Funktionanalysis, Heft 3, Jahrgang 93/94, 169-183.

(with F. Cîrstea) On the uniqueness of solutions to a class of singular anisotropic elliptic boundary value problems, RGMIA Research Report Collection, vol. 3 (2000), 405-414.

(with M. Iosifescu) Septième Colloque franco-roumain de mathématiques appliquées, Gazette des Mathématiciens, No. 103 (janvier 2005), 57-58 [see also Matapli, No. 76 (mars 2005), 47-48].

(with Q. Tang) Asymptotics and pinning of vortices for a variational problem with vanishing weight related to superconductivity, Centre for Mathematical Analysis and Its Applications, University of Sussex, CMAIA 98-01.

Proposed problem No. 11024, American Mathematical Monthly 6/110 (2003) (pdf) (solution).

Proposed problem No. 11073, American Mathematical Monthly 3/111 (2004) (pdf).

Proposed problem No. 11104, American Mathematical Monthly 8/111 (2004) (pdf).

Proposed problem No. 11137, American Mathematical Monthly 2/112 (2005) (pdf) (AMMsolution).

Proposed problem No. 2005-1, Electronic Journal of Differential Equations (Problem Section, click here).

Proposed problem No. 11167, American Mathematical Monthly 7/112 (2005) (pdf) (AMMsolution).

Proposed problem No. 1224, Elemente der Mathematik 4/60 (2005) (pdf).

A Liouville-Type Property for Differential Inequalities, Proposed problem No. 06-005, SIAM Problems and Solutions, 2006.

Abrikosov Lattices in Superconductivity, Proposed problem No. 06-006, SIAM Problems and Solutions, 2006.

Proposed problem, Elemente der Mathematik, in press (tex) (pdf).

Proposed problem No. 11304, American Mathematical Monthly 6/114 (2007) (pdf).