%0 Journal Article
%A Raftery, J. G.
%A Sturm, T.
%T Tolerance numbers, congruence $n$-permutability and BCK-algebras
%J Czechoslovak Mathematical Journal
%D 1992
%P 727-740
%V 42
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1992.128368/
%R 10.21136/CMJ.1992.128368
%G en
%F 10_21136_CMJ_1992_128368