%0 Journal Article %A Lupiáñez, Francisco Gallego %T Finite-to-one fuzzy maps and fuzzy perfect maps %J Kybernetika %D 1998 %P [163] %V 34 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1998__34_2_a2/ %G en %F KYB_1998__34_2_a2