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@article{DAN_1990_314_6_a1, author = {A. V. Arutyunov}, title = {On the theory of quadratic mappings in {Banach} spaces}, journal = {Doklady Akademii Nauk}, pages = {1290--1292}, publisher = {mathdoc}, volume = {314}, number = {6}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1990_314_6_a1/} }
A. V. Arutyunov. On the theory of quadratic mappings in Banach spaces. Doklady Akademii Nauk, Tome 314 (1990) no. 6, pp. 1290-1292. http://geodesic.mathdoc.fr/item/DAN_1990_314_6_a1/