TY  - JOUR
AU  - V. V. Gudkov
AU  - A. Ya. Lepin
TI  - On necessary and sufficient conditions for the solvability of certain boundary-value problems for a second-order ordinary differential equation
JO  - Doklady Akademii Nauk
PY  - 1973
SP  - 760
EP  - 762
VL  - 210
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1973_210_4_a2/
LA  - ru
ID  - DAN_1973_210_4_a2
ER  -