TY  - JOUR
AU  - Ton Sales
TI  - Fuzzy sets as set classes.
JO  - Stochastica
PY  - 1982
SP  - 249
VL  - 6
IS  - 3
PB  - mathdoc
UR  - https://geodesic-test.mathdoc.fr/item/STO_1982__6_3_38867/
LA  - en
ID  - STO_1982__6_3_38867
ER  -