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@article{INTD_1973_1_a1, author = {A. T. Fomenko}, title = {Geometric variational problems}, journal = {Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Noveishie Dostizheniya}, pages = {39--60}, publisher = {mathdoc}, volume = {1}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/INTD_1973_1_a1/} }
A. T. Fomenko. Geometric variational problems. Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Noveishie Dostizheniya, Tome 1 (1973), pp. 39-60. http://geodesic.mathdoc.fr/item/INTD_1973_1_a1/