@article{ValVai:60,
  journal = {An. Univ. C. I. Parhon Ser. \c Sti. Nat. Mat.-Fiz. No.},
  volume = {25},
  title = {Sur une \'equation fonctionnelle},
  author = {V{\^a}lcovici, V. and Vaida, Drago{\c{s}}},
  year = {1960},
  pages = {21--24},
}