%0 Journal Article
%A A. M. Nakhushev
%T Boundary value problem of mixed type with two lines of degeneracy
%J Doklady Akademii Nauk
%D 1966
%P 38-40
%V 170
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1966_170_1_a8/
%G ru
%F DAN_1966_170_1_a8