참고문헌
- A. Dvurecenskij, Measures on commutative BCK-algebras, Atti Sem. Mat. Fis. Univ. Modena 49 (2001), no. 1, 19-49.
- A. Dvurecenskij, Commutative BCK-algebras and lattice ordered groups with universal property, Indian J. Math. 42 (2000), no. 2, 119-151.
- A. Dvurecenskij, Ideals of commutative BCK-algebras, Ricerche Mat. 49 (2000), no. 2, 241-256.
- A. Dvurecenskij, Commutative BCK-algebras and quantum structures, Internat. J. Theoret. Phys. 39 (2000), no. 3, 653-664.
- A. Dvurecenskij, Commutative BCK-algebras with product, Demonstratio Math. 33 (2000), no. 1, 1-19. https://doi.org/10.1515/dema-2000-0102
- A. Dvurecenskij, On categorical equivalences of commutative BCK-algebras, Studia Logica 64 (2000), no. 1, 21-36. https://doi.org/10.1023/A:1005282128667
- A. Dvurecenskij and M. G. Graziano, Measures on Dedekind complete commutative BCK-algebras, Atti Sem. Mat. Fis. Univ. Modena 49 (2001), no. 1, 51-72.
- Y. S. Huang, BCI-algebra, Science Press, Beijing, 2006.
- Y. Imai and K. Iseki, On axiom systems of propositional calculi, Proc. Jpn. Acad. 42 (1966), 19-21. https://doi.org/10.3792/pja/1195522169
- K. Iseki, An algebra related with a propositional calculus, Proc. Japan Acad. 42 (1966), 26-29. https://doi.org/10.3792/pja/1195522171
- K. Iseki, Some examples of BCI-algebras, Math. Seminar Notes 8 (1980), 237-240.
- K. Iseki, On ideals in BCK-algebras, Math. Seminar Notes 3 (1975), 1-12.
- K. Iseki, On some ideals in BCK-algebras, Math. Seminar Notes 3 (1975), 65-70.
- K. Iseki and S. Tanaka, An introduction to the theory of BCK-algebras, Math. Japonica 23 (1978), no. 1, 1-26.
- Y. B. Jun, Soft BCK/BCI-algebras, Comput. Math. Appl. 56 (2008), 1408-1413. https://doi.org/10.1016/j.camwa.2008.02.035
- Y. B. Jun, Biideals in BCK/BCI-algebras, Kyungpook Math. J. 48 (2008), 577-584. https://doi.org/10.5666/KMJ.2008.48.4.577
- Y. B. Jun and C. H. Park, Applications of soft sets in ideal theory of BCK/BCI-algebras, Inform. Sci. 178 (2008), 2466-2475.
- J. Meng, Commutative ideals in BCK-algerbas, Pure Appl. Math. (in China) 9 (1991), 49-53.
- J. Meng and Y. B. Jun, BCK-algebras, Kyungmoon Sa Co. Seoul, 1994.
- L. A. Zadeh, Fuzzy sets, Inform. Control 8 (1965), 338-353. https://doi.org/10.1016/S0019-9958(65)90241-X