@article{DE_1994_30_7_a25,
     author = {A. V. Savkin},
     title = {Absolute stability of nonlinear systems with high-frequency parametric excitation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1282--1283},
     publisher = {mathdoc},
     volume = {30},
     number = {7},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1994_30_7_a25/}
}