%0 Journal Article
%A S. E. Pastukhova
%T On the loss of smoothness of the solution of a mixed problem with an oblique derivative for the wave operator
%J Differencialʹnye uravneniâ
%D 1990
%P 478-488
%V 26
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1990_26_3_a15/
%G ru
%F DE_1990_26_3_a15