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@article{DAN_1991_318_2_a17, author = {Ya. N. Fel'd}, title = {A general reciprocity theorem for nonmonochromatic processes in}, journal = {Doklady Akademii Nauk}, pages = {325--327}, publisher = {mathdoc}, volume = {318}, number = {2}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1991_318_2_a17/} }
Ya. N. Fel'd. A general reciprocity theorem for nonmonochromatic processes in. Doklady Akademii Nauk, Tome 318 (1991) no. 2, pp. 325-327. http://geodesic.mathdoc.fr/item/DAN_1991_318_2_a17/