@article{DAN_1966_171_3_a7,
     author = {V. A. Yakubovich},
     title = {Periodic and almost periodic limiting states of control systems with several, in general discontinuous, nonlinear terms},
     journal = {Doklady Akademii Nauk},
     pages = {533--536},
     publisher = {mathdoc},
     volume = {171},
     number = {3},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_171_3_a7/}
}