%0 Journal Article
%A M. I. Vishik
%A V. V. Grushin
%T Degenerating elliptic differential and psevdo-differential operators
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1970
%P 21-50
%V 25
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1970_25_4_a3/
%G en
%F RM_1970_25_4_a3