@article{DE_1974_10_3_a2,
     author = {V. V. Krakhotko and A. V. Metel'skii},
     title = {On the controllability of systems with distributed lag},
     journal = {Differencialʹnye uravneni\^a},
     pages = {419--425},
     publisher = {mathdoc},
     volume = {10},
     number = {3},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_3_a2/}
}