@article{DAN_1986_286_6_a8,
     author = {M. A. Yagubov},
     title = {An extension of a control problem and a theorem on the existence},
     journal = {Doklady Akademii Nauk},
     pages = {1316--1319},
     publisher = {mathdoc},
     volume = {286},
     number = {6},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_286_6_a8/}
}