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@article{IVM_1958_6_a17, author = {S. F. Morozov}, title = {Two-dimensional variational problems on manifolds}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {180--192}, publisher = {mathdoc}, number = {6}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1958_6_a17/} }
S. F. Morozov. Two-dimensional variational problems on manifolds. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1958), pp. 180-192. http://geodesic.mathdoc.fr/item/IVM_1958_6_a17/