참고문헌
- K. T. Atanassov, Intuitionistic fuzzy sets, Fuzzy Sets and Systems, 20 (1986), 87 - 96. https://doi.org/10.1016/S0165-0114(86)80034-3
- K. T. Atanassov, New operations defined over the intuitionistic fuzzy sets, Fuzzy Sets and Systems, 61 (1994), 137 - 142. https://doi.org/10.1016/0165-0114(94)90229-1
- K. T. Atanassov, Intuitionistic fuzzy sets, Theory and applications, Studies in Fuzziness and Soft Computing, Heidelberg; Physica-Verlag, 35(1999).
- Y. B. Jun, Intuitionistic Fuzzy Bi-ideals of Ordered Semigroups, KYUNGPOOK Math. J. 45(2005), 527 - 537.
- N. Kehayopulu, On weakly prime ideals of ordered semigroups, Math. Japonica, 35(6)(1990), 1051 - 1056.
- N. Kehayopulu, On left regular ordered semigroups, Math. Japonica, 35(6)(1990), 1057- 1060.
- N. Kehayopulu,On completely regular poe-semigroups, Math. Japonica, 37(1)(1992), 123-130.
- N. Kehayopulu and M. Tsingelis, Fuzzy sets in ordered groupoids, Semigroup Forum, 65(2002), 128 - 132. https://doi.org/10.1007/s002330010079
- N. Kehayopulu and M. Tsingelis, The embedding of an ordered groupoid into a poegroupoid in terms of fuzzy sets, Inform. Sci., 152(2003), 231 - 236. https://doi.org/10.1016/S0020-0255(02)00408-5
- N. Kehayopulu and M. Tsingelis, Fuzzy interior ideals in ordered semigroups, Lobachevskii Journal of Mathematics, Vol. 21, 2006, 65 - 71.
- N. Kehayopulu, Note on interior ideals, ideal elements in ordered semigroups, Scientiae Mathematicae 2, No. 3 (1999), 407 - 409 (electronic).
- K. H. Kim, W. A. Dudek and Y. B. Jun, On intuitionistic fuzzy subquasigroups of quasi- groups, Quasigroups and Related Systems, 7(2000), 15 - 28.
- K. H. Kim and Y. B. Jun, Intuitionistic fuzzy interior ideals of semigroups, Int. J. Math. Math. Sci., 27(5)(2001), 261 - 267. https://doi.org/10.1155/S0161171201010778
- K. H. Kim and Y. B. Jun, Intuitionistic fuzzy ideals of semigroups, Indian J. Pure Appl. Math., 33(4)(2002), 443 - 449.
- N. Kuroki, Fuzzy semiprime ideals in semigroups, Fuzzy Sets and Systems 8, No. 1 (1982), 71 - 79. https://doi.org/10.1016/0165-0114(82)90031-8
- M. Shabir and A. Khan, On Fuzzy Ordered semigroups, (to appear).
- L. A. Zadeh, Fuzzy sets, Inform. Control, 8(1965), 338 - 353. https://doi.org/10.1016/S0019-9958(65)90241-X