%0 Journal Article %A Žembery, Ivan %T Admissible operations in categories of algebras %J Mathematica slovaca %D 1977 %P 209-212 %V 27 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1977__27_3_a0/ %G en %F MASLO_1977__27_3_a0