@article{DA_1971_9_a5,
     author = {N. P. Dement'ev},
     title = {The switching points for a certain bilinear optimal control problem},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {52--58},
     publisher = {mathdoc},
     number = {9},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_1971_9_a5/}
}