%0 Journal Article
%A V. G. Durnev
%T Generalization of problem 9.25 from ``the Kourovka notebook''
%J Matematičeskie zametki
%D 1990
%P 15-19
%V 47
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1990_47_2_a2/
%G ru
%F MZM_1990_47_2_a2