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@article{DAN_1968_182_4_a1, author = {V. V. Velichenko}, title = {On sufficient conditions for optimality in the maximum principle}, journal = {Doklady Akademii Nauk}, pages = {747--749}, publisher = {mathdoc}, volume = {182}, number = {4}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1968_182_4_a1/} }
V. V. Velichenko. On sufficient conditions for optimality in the maximum principle. Doklady Akademii Nauk, Tome 182 (1968) no. 4, pp. 747-749. http://geodesic.mathdoc.fr/item/DAN_1968_182_4_a1/