%0 Journal Article %A Hedrlín, Zdeněk %T On number of commutative mappings from finite set into itself (Preliminary communication) %J Commentationes Mathematicae Universitatis Carolinae %D 1962 %P 32 %V 3 %N 1 %U http://geodesic.mathdoc.fr/item/CMUC_1962_3_1_a6/ %G en %F CMUC_1962_3_1_a6