%0 Journal Article %A Chajda, Ivan %A Länger, Helmut %T Ring-like operations is pseudocomplemented semilattices %J Discussiones Mathematicae. General Algebra and Applications %D 2000 %P 87-95 %V 20 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGAA_2000_20_1_a7/ %G en %F DMGAA_2000_20_1_a7