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@article{DAN_1966_166_2_a6, author = {I. M. Lavrent'ev}, title = {On the variational theory of nonlinear equations}, journal = {Doklady Akademii Nauk}, pages = {284--286}, publisher = {mathdoc}, volume = {166}, number = {2}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1966_166_2_a6/} }
I. M. Lavrent'ev. On the variational theory of nonlinear equations. Doklady Akademii Nauk, Tome 166 (1966) no. 2, pp. 284-286. http://geodesic.mathdoc.fr/item/DAN_1966_166_2_a6/