%0 Journal Article
%A G. I. Èskin
%T General boundary-value problems for equations of principal type in a~planar domain with angle points
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1963
%V 18
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1963_18_3_a19/
%G ru
%F RM_1963_18_3_a19