TY  - JOUR
AU  - Ya. N. Fel'd
TI  - A general reciprocity theorem for nonmonochromatic processes in
JO  - Doklady Akademii Nauk
PY  - 1991
SP  - 325
EP  - 327
VL  - 318
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1991_318_2_a17/
LA  - ru
ID  - DAN_1991_318_2_a17
ER  -