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@article{DAN_1975_224_6_a5, author = {E. S. Levitin}, title = {On the perturbation theory of nonsmooth extremal problems with constraints}, journal = {Doklady Akademii Nauk}, pages = {1260--1263}, publisher = {mathdoc}, volume = {224}, number = {6}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1975_224_6_a5/} }
E. S. Levitin. On the perturbation theory of nonsmooth extremal problems with constraints. Doklady Akademii Nauk, Tome 224 (1975) no. 6, pp. 1260-1263. http://geodesic.mathdoc.fr/item/DAN_1975_224_6_a5/