TY  - JOUR
AU  - E. P. Eroshenkov
TI  - Letter to the editors: “The spectrum of the Bitsadze–Samarskiǐ problem” [Differentsial'nye Uravneniya 19 (1983), no. 1,
JO  - Differencialʹnye uravneniâ
PY  - 1985
SP  - 178
VL  - 21
IS  - 1
UR  - http://geodesic.mathdoc.fr/item/DE_1985_21_1_a27/
LA  - ru
ID  - DE_1985_21_1_a27
ER  -