%0 Journal Article
%A E. P. Eroshenkov
%T Letter to the editors: “The spectrum of the Bitsadze–Samarskiǐ problem” [Differentsial'nye Uravneniya 19 (1983), no. 1,
%J Differencialʹnye uravneniâ
%D 1985
%P 178
%V 21
%N 1
%U http://geodesic.mathdoc.fr/item/DE_1985_21_1_a27/
%G ru
%F DE_1985_21_1_a27