References
- I. Chon, Extended fuzzy equivalence relations, Kangweon-Kyungki Math. Jour. 15 (2007), 59-69.
- I. Chon, Some properties of fuzzy equivalence relations and fuzzy congruences, J. Natural Science, SWINS 25 (2013), 75-81.
- J. A. Goguen, L-fuzzy sets, J. Math. Anal. Appl. 18 (1967), 145-174. https://doi.org/10.1016/0022-247X(67)90189-8
- K. C. Gupta and R. K. Gupta, Fuzzy equivalence relation redefined, Fuzzy Sets and Systems 79 (1996), 227-233. https://doi.org/10.1016/0165-0114(95)00155-7
- V. Murali, Fuzzy equivalence relation, Fuzzy Sets and Systems 30 (1989), 155- 163. https://doi.org/10.1016/0165-0114(89)90077-8
- M. Samhan, Fuzzy congruences on semigroups, Inform. Sci. 74 (1993), 165-175. https://doi.org/10.1016/0020-0255(93)90132-6
- L. A. Zadeh, Fuzzy sets, Inform. and Control 8 (1965), 338-353 https://doi.org/10.1016/S0019-9958(65)90241-X