@article{DAN_1985_283_4_a13,
     author = {G. A. Leonov and Al. A. Pervozvanskii},
     title = {Frequency bounds on the dissipative region of nonlinear control systems},
     journal = {Doklady Akademii Nauk},
     pages = {826--830},
     publisher = {mathdoc},
     volume = {283},
     number = {4},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_283_4_a13/}
}