%0 Journal Article
%A P. R. Popivanov
%T The local solvability of pseudodifferential equations wtih double characteristics
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1974
%V 29
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1974_29_5_a18/
%G ru
%F RM_1974_29_5_a18