%0 Journal Article
%A A. F. Filippov
%T A boundary value problem for the wave equation
%J Differencialʹnye uravneniâ
%D 1977
%P 2043-2050
%V 13
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1977_13_11_a14/
%G ru
%F DE_1977_13_11_a14