%0 Journal Article
%A A. S. Kopets
%T Quasiregular solutions for systems of~hypoelliptic differential equations
%J Teoretičeskaâ i matematičeskaâ fizika
%D 1990
%P 25-31
%V 85
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_1990_85_1_a2/
%G ru
%F TMF_1990_85_1_a2