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@article{DAN_1962_146_4_a18, author = {A. R. Frenkin}, title = {Green's functions in the theory of strong coupling}, journal = {Doklady Akademii Nauk}, pages = {805--807}, publisher = {mathdoc}, volume = {146}, number = {4}, year = {1962}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1962_146_4_a18/} }
A. R. Frenkin. Green's functions in the theory of strong coupling. Doklady Akademii Nauk, Tome 146 (1962) no. 4, pp. 805-807. http://geodesic.mathdoc.fr/item/DAN_1962_146_4_a18/