%0 Journal Article
%A E. B. Frid
%T On the semiregularity of boundary points for nonlinear equations
%J Sbornik. Mathematics
%D 1974
%P 483-507
%V 23
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1974_23_4_a1/
%G en
%F SM_1974_23_4_a1