Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1975_221_5_a6, author = {E. S. Levitin}, title = {On conditions for a local minimum in extremal problems with constraints}, journal = {Doklady Akademii Nauk}, pages = {1031--1034}, publisher = {mathdoc}, volume = {221}, number = {5}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1975_221_5_a6/} }
E. S. Levitin. On conditions for a local minimum in extremal problems with constraints. Doklady Akademii Nauk, Tome 221 (1975) no. 5, pp. 1031-1034. http://geodesic.mathdoc.fr/item/DAN_1975_221_5_a6/