%0 Journal Article
%A Parobek, Jiří
%T On the number of normal subgroups of a given prime index
%J Časopis pro pěstování matematiky
%D 1976
%P 91-94
%V 101
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.21136/CPM.1976.108684/
%R 10.21136/CPM.1976.108684
%G en
%F 10_21136_CPM_1976_108684