%0 Journal Article
%A A. I. Perov
%T A certain generalization of the Frobenius theorem
%J Differencialʹnye uravneniâ
%D 1969
%P 1881-1884
%V 5
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1969_5_10_a14/
%G ru
%F DE_1969_5_10_a14