Fuzzy Sets and Systems
Fuzzy Sets and Systems > 1998 > 96 > 2 > 147-159
Fuzzy Sets and Systems > 1998 > 99 > 1 > 27-36
Fuzzy Sets and Systems > 1998 > 99 > 3 > 265-272
Fuzzy Sets and Systems > 1998 > 96 > 2 > 147-159
Fuzzy Sets and Systems > 1998 > 99 > 1 > 27-36
Fuzzy Sets and Systems > 1998 > 99 > 3 > 265-272