TY  - JOUR
AU  - A. K. Kazanskii
TI  - Equations for Green's functions obtained from a~variational principle
JO  - Teoretičeskaâ i matematičeskaâ fizika
PY  - 1974
SP  - 3
EP  - 12
VL  - 21
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TMF_1974_21_1_a0/
LA  - ru
ID  - TMF_1974_21_1_a0
ER  -