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@article{DAN_1963_148_4_a18, author = {Liu Yi-chen and I. T. Todorov}, title = {Integral representation of vertex part in perturbation theory}, journal = {Doklady Akademii Nauk}, pages = {806--809}, publisher = {mathdoc}, volume = {148}, number = {4}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1963_148_4_a18/} }
Liu Yi-chen; I. T. Todorov. Integral representation of vertex part in perturbation theory. Doklady Akademii Nauk, Tome 148 (1963) no. 4, pp. 806-809. http://geodesic.mathdoc.fr/item/DAN_1963_148_4_a18/