@article{DE_1974_10_2_a6,
     author = {V. V. Ignatenko and V. V. Krakhotko},
     title = {Controllability of a linear system with aftereffect},
     journal = {Differencialʹnye uravneni\^a},
     pages = {241--245},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_2_a6/}
}