@article{DAN_1977_236_5_a11,
     author = {V. M. Marchenko},
     title = {On the controllability of linear systems with aftereffect},
     journal = {Doklady Akademii Nauk},
     pages = {1083--1086},
     year = {1977},
     volume = {236},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_236_5_a11/}
}