TY  - JOUR
AU  - A. Ya. Lepin
TI  - Existence of solutions of boundary value problems for a second-order equation
JO  - Differencialʹnye uravneniâ
PY  - 1990
SP  - 1729
EP  - 1737
VL  - 26
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1990_26_10_a9/
LA  - ru
ID  - DE_1990_26_10_a9
ER  -