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@article{DAN_1966_171_1_a10, author = {L. Neishtadt}, title = {General theory of variational problems with applications to optimal control}, journal = {Doklady Akademii Nauk}, pages = {48--50}, publisher = {mathdoc}, volume = {171}, number = {1}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1966_171_1_a10/} }
L. Neishtadt. General theory of variational problems with applications to optimal control. Doklady Akademii Nauk, Tome 171 (1966) no. 1, pp. 48-50. http://geodesic.mathdoc.fr/item/DAN_1966_171_1_a10/