References
- S. S. Ahn, Y. D. Jun and H. S. Kim, Fuzzy quick ideals in BCK/BCI-algebras, J. Fuzzy Math. 11 (2003), 631-637.
- 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. Iseki, On BCI-algebras, Mathematics Seminar Notes 8 (1980), 125-130.
- K. Iseki and S. Tanaka, An introduction to the theory of BCK-algebras, Math. Japonica 23(1) (1978), 1-26.
- Y. B. Jun, H. S. Kim and D. S. Yoo, Intuitionistic fuzzy d-algebras, Sci. Math. Japon. 66 (2007), 117-125.
- Y. B. Jun, J. Neggers and H. S. Kim, Fuzzy d-ideals of d-algehras, J. Fuzzy Math. 8(1) (2000), 123-130.
-
Y. C. Lee and H. S. Kim, On
$d^*$ -subalgebras of d-transitive d-algebras. Math. Slovaca 49(1) (1999), 27-33. - J. Meng and Y. B. Jun, BCK-algebras, Kyung Moon Sa, Seoul, 1994.
- J. Neggers and H. S. Kim, On d-algebras, Math. Slovaca 49, (1999), 19-26.
- J. Neggers, Y. B. Jun and H. S. Kim, On d-ideals in d-algebras, Math. Slovaca 49(3) (1999), 243-251.