TY  - JOUR
AU  - E. P. Eroshenkov
TI  - Letter to the editors: ``The spectrum of the Bitsadze--Samarski{\v\i} problem'' [Differentsial'nye Uravneniya \textbf{19} (1983), no.~1, 

JO  - Differencialʹnye uravneniâ
PY  - 1985
SP  - 178
VL  - 21
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1985_21_1_a27/
LA  - ru
ID  - DE_1985_21_1_a27
ER  -