%0 Journal Article
%A Michalski, Jacek
%T Covering $k$-groups of $n$-groups
%J Archivum mathematicum
%D 1981
%P 207-226
%V 17
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ARM_1981__17_4_a3/
%G en
%F ARM_1981__17_4_a3