%0 Journal Article
%A A. A. Dezin
%T The simplest solvable extensions of ultrahyperbolic and pseudoparabolic operators
%J Doklady Akademii Nauk
%D 1963
%P 1013-1016
%V 148
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_148_5_a4/
%G ru
%F DAN_1963_148_5_a4