TY  - JOUR
AU  - V. I. Gorbachuk
AU  - M. L. Gorbachuk
TI  - On boundary-value problems for a first-order differential equation with operator coefficients and the expansion in eigenfunctions of this equation
JO  - Doklady Akademii Nauk
PY  - 1973
SP  - 1268
EP  - 1271
VL  - 208
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1973_208_6_a1/
LA  - ru
ID  - DAN_1973_208_6_a1
ER  -