%0 Journal Article %A Suková, E. %A Vinárek, J. %T Different types of products and subdirectly irreducible %J Acta Universitatis Carolinae. Mathematica et Physica %D 1986 %P 23-30 %V 27 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AUCMP_1986__27_2_a4/ %G en %F AUCMP_1986__27_2_a4