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@article{SF_1985__31_134759, author = {B. Wozniakowska}, title = {Finitely axiomatizable varieties of {BCK-algebras.}}, journal = {Semigroup forum}, pages = {361--366}, publisher = {mathdoc}, volume = {31}, year = {1985}, zbl = {0567.08006}, url = {http://geodesic.mathdoc.fr/item/SF_1985__31_134759/} }
B. Wozniakowska. Finitely axiomatizable varieties of BCK-algebras.. Semigroup forum, Tome 31 (1985), pp. 361-366. http://geodesic.mathdoc.fr/item/SF_1985__31_134759/