%0 Journal Article
%A A. S. Popeluhin
%T Necessary conditions for the local solvability of a class of pseudodifferential operators with double involutive characteristics
%J Vestnik Moskovskogo universiteta. Matematika, mehanika
%D 1988
%P 98-100
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VMUMM_1988_1_a29/
%G ru
%F VMUMM_1988_1_a29