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@article{DE_1999_35_4_a15, author = {S. A. Vakhrameev}, title = {An existence theorem for a nonlinear time-optimality problem}, journal = {Differencialʹnye uravneni\^a}, pages = {565--567}, publisher = {mathdoc}, volume = {35}, number = {4}, year = {1999}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1999_35_4_a15/} }
S. A. Vakhrameev. An existence theorem for a nonlinear time-optimality problem. Differencialʹnye uravneniâ, Tome 35 (1999) no. 4, pp. 565-567. http://geodesic.mathdoc.fr/item/DE_1999_35_4_a15/