@article{DAN_1961_139_2_a16,
     author = {V. A. Vasilenko},
     title = {Generalizing the invariance principle to linear automatic systems with variable parameters},
     journal = {Doklady Akademii Nauk},
     pages = {324--326},
     publisher = {mathdoc},
     volume = {139},
     number = {2},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_2_a16/}
}