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@article{DAN_1980_253_2_a13, author = {A. N. Tikhonov}, title = {On a reciprocity principle}, journal = {Doklady Akademii Nauk}, pages = {305--308}, publisher = {mathdoc}, volume = {253}, number = {2}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1980_253_2_a13/} }
A. N. Tikhonov. On a reciprocity principle. Doklady Akademii Nauk, Tome 253 (1980) no. 2, pp. 305-308. http://geodesic.mathdoc.fr/item/DAN_1980_253_2_a13/