@article{DAN_1970_195_3_a2,
     author = {F. P. Vasil'ev and R. P. Ivanov},
     title = {Certain approximate methods of solving time-optimal problems in {Banach} spaces in the presence of phase constraints},
     journal = {Doklady Akademii Nauk},
     pages = {526--529},
     publisher = {mathdoc},
     volume = {195},
     number = {3},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_195_3_a2/}
}