%0 Journal Article
%A P. G. Lasy
%T Characteristic vectors of linear Pfaffian systems
%J Differencialʹnye uravneniâ
%D 1982
%P 901-903
%V 18
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1982_18_5_a26/
%G ru
%F DE_1982_18_5_a26