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@article{DAN_1961_138_2_a1, author = {L. N. Gagen-Torn and S. G. Mikhlin}, title = {On the solvability of non-linear {Ritz} systems}, journal = {Doklady Akademii Nauk}, pages = {258--260}, publisher = {mathdoc}, volume = {138}, number = {2}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_2_a1/} }
L. N. Gagen-Torn; S. G. Mikhlin. On the solvability of non-linear Ritz systems. Doklady Akademii Nauk, Tome 138 (1961) no. 2, pp. 258-260. http://geodesic.mathdoc.fr/item/DAN_1961_138_2_a1/