@incollection{Sul:97,
  publisher = {Inforec, Bucharest},
  title = {Using fuzzy sets in solving optimization problems},
  editors = {Rosca, I. Gh. and Smeureanu, I.},
  author = {Sularia, Mircea},
  year = {1997},
  booktitle = {Computer Science: the Proceedings of the $3^{rd}$ International
               Symposium of Economic Informatics, May 6-9 1997 },
  pages = {638-644},
}