%0 Journal Article
%A M. M. Smirnov
%T The second boundary value problem for a certain fourth order equation of mixed type in the disc
%J Differencialʹnye uravneniâ
%D 1973
%P 2052-2057
%V 9
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1973_9_11_a14/
%G ru
%F DE_1973_9_11_a14