%0 Journal Article %A Porubský, Štefan %T Correction to my paper: “Commutative semi-primary $x$-semigroups” %J Czechoslovak Mathematical Journal %D 1978 %V 28 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1978.101555/ %R 10.21136/CMJ.1978.101555 %G en %F 10_21136_CMJ_1978_101555