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@article{DAN_1993_333_6_a0, author = {A. S. Antipin}, title = {Controlled gradient saddle differential systems}, journal = {Doklady Akademii Nauk}, pages = {693--695}, publisher = {mathdoc}, volume = {333}, number = {6}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1993_333_6_a0/} }
A. S. Antipin. Controlled gradient saddle differential systems. Doklady Akademii Nauk, Tome 333 (1993) no. 6, pp. 693-695. http://geodesic.mathdoc.fr/item/DAN_1993_333_6_a0/