%0 Journal Article
%A E. I. Moiseev
%T Disposition of the spectrum of the Tricomi problem for the Lavrent'ev--Bitsadze equation
%J Differencialʹnye uravneniâ
%D 1989
%P 97-106
%V 25
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_1_a11/
%G ru
%F DE_1989_25_1_a11