@article{BSL8_4_Palasinski_Wozniakowska,
author = {Marek PA{\L}ASI{\'N}SKI and Barbara WO{\'Z}NIAKOWSKA},
title = {On Congruence Lattices of Commutative $BCK$-Algebras},
journal = {Bulletin of the Section of Logic},
volume = {8},
number = {4},
year = {1979},
pages = {188--190}
}