%0 Journal Article
%A S. D. Èidel'man
%A V. A. Kondratiev
%T Certain properties of the positive solutions of evolutionary hypoelliptic equations
%J Doklady Akademii Nauk
%D 1969
%P 1027-1030
%V 184
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1969_184_5_a1/
%G ru
%F DAN_1969_184_5_a1