@article{00011595, title = {Fuzzy }, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {14}, year = {1991}, pages = {309-314}, doi = {10.1155/S0161171291000364}, zbl = {0738.54002}, language = {en}, url = {http://dml.mathdoc.fr/item/00011595} }
Mukherjee, M.N.; Sinha, S.P. Fuzzy . International Journal of Mathematics and Mathematical Sciences, Tome 14 (1991) pp. 309-314. doi : 10.1155/S0161171291000364. http://gdmltest.u-ga.fr/item/00011595/