@article{DE_1985_21_12_a9,
     author = {B. Sh. Shklyar},
     title = {Approximate controllability of systems of delaying type in a class of positive controls},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2087--2096},
     publisher = {mathdoc},
     volume = {21},
     number = {12},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1985_21_12_a9/}
}