참고문헌
- Fuzzy Sets Syst. v.20 Intuitionistic fuzzy sets Atanassov, K.T.
- PU. M. A. v.8 no.1 On fuzzy (1,2)-ideals in semigroups Jun, Y.B.;Lajos, S.
- Indian J. Pure Appl. Math. v.33 no.4 Intuitionistic fuzzy ideals of semigroups Kim, K.H.;Jun, Y.B.
- Fuzzy Sets Syst. v.5 On fuzzy ideals and fuzzy bi-ideals in semigroups Kuroki, N.
- Math. Seminar Notes (presently, Kobe J. Math.) v.5 (1, 2)-ideal characterizatiions of unions of groups Lajos, S.
- PU. M. A. v.8 no.2-3-4 On fuzzy (1, 2)-ideals in semigroups II Lajos, S.;Jun, Y.B.
- Inform. Control v.8 Fuzzy sets Zadeh, L.A.