@article{DE_1975_11_9_a4,
     author = {M. K. Kerimov},
     title = {Controllability in the large of linear periodic systems in the presence of constraints on the controls},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1575--1583},
     publisher = {mathdoc},
     volume = {11},
     number = {9},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_9_a4/}
}