%0 Journal Article
%A V. E. Fedorov
%T A class of second order Sobolev type equations and degenerate groups of operators
%J Vestnik Chelyabinskogo Gosudarstvennogo Universiteta. Matematika, Mekhanika, Informatika
%D 2011
%P 59-75
%N 13
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VCHGU_2011_13_a5/
%G ru
%F VCHGU_2011_13_a5