@article{DE_1984_20_12_a0,
     author = {E. E. Barbashina},
     title = {A bundle with variable control {variations.~II}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2027--2036},
     publisher = {mathdoc},
     volume = {20},
     number = {12},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1984_20_12_a0/}
}