%0 Journal Article
%A V. P. Mikhailov
%T The first boundary-value problem for certain semi-bounded hypo-elliptic differential operators
%J Doklady Akademii Nauk
%D 1963
%P 1257-1260
%V 149
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_149_6_a3/
%G ru
%F DAN_1963_149_6_a3