%0 Journal Article
%A I. V. Gel'man
%T On stable solvable extensions of partial differential operators
%J Doklady Akademii Nauk
%D 1965
%P 279-281
%V 163
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1965_163_2_a0/
%G ru
%F DAN_1965_163_2_a0