Fuzzy Sets and Systems
Fuzzy Sets and Systems > 1999 > 101 > 1 > 59-65
Fuzzy Sets and Systems > 1999 > 103 > 1 > 153-162
Fuzzy Sets and Systems > 1999 > 105 > 1 > 13-31
Fuzzy Sets and Systems > 1999 > 105 > 3 > 311-337
Fuzzy Sets and Systems > 1999 > 106 > 3 > 381-386
Fuzzy Sets and Systems > 1999 > 107 > 1 > 37-57