%0 Journal Article %A Halaš, Radomír %T Annihilators in BCK-algebras %J Czechoslovak Mathematical Journal %D 2003 %P 1001-1007 %V 53 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2003__53_4_a16/ %G en %F CMJ_2003__53_4_a16