共 41 条
[12]
Çagman N, 2012, HACET J MATH STAT, V41, P615
[13]
Çagman N, 2012, HACET J MATH STAT, V41, P365
[14]
Deli I., 2015, Ann. Fuzzy Math. Inf, V10, P847
[19]
Dubois D, 1980, SET SYSTEMS THEORY A