%0 Journal Article
%A S. M. Ponomarev
%T On some boundary value problems for equations of mixed type with a spectral parameter
%J Doklady Akademii Nauk
%D 1981
%P 1074-1078
%V 260
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1981_260_5_a12/
%G ru
%F DAN_1981_260_5_a12