%0 Journal Article
%A A. G. Kuz'min
%T Investigation of boundary value problems for an equation of mixed type with a family of characteristics that cross the line of degeneracy twice
%J Differencialʹnye uravneniâ
%D 1979
%P 1478-1490
%V 15
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1979_15_8_a13/
%G ru
%F DE_1979_15_8_a13