@article{DE_1971_7_7_a15,
     author = {V. I. Zubov},
     title = {The control of rotational motion},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1320--1322},
     year = {1971},
     volume = {7},
     number = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1971_7_7_a15/}
}