TY  - JOUR
AU  - A. L. Teptin
TI  - An effective criterion for the existence and constancy of sign of the Green's function for certain difference boundary value problems
JO  - Izvestiâ vysših učebnyh zavedenij. Matematika
PY  - 1967
SP  - 102
EP  - 106
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IVM_1967_1_a15/
LA  - ru
ID  - IVM_1967_1_a15
ER  -