@article{DE_2000_36_1_a10,
     author = {S. F. Nikolaev and E. L. Tonkov},
     title = {Differentiability of the optimal time vector and positional control of a linear subcritical system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {76--84},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2000_36_1_a10/}
}