@article{DE_1992_28_12_a0,
     author = {O. V. Anashkin and M. M. Khapaev},
     title = {The method of {Lyapunov} functions for systems with perturbations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2027--2029},
     publisher = {mathdoc},
     volume = {28},
     number = {12},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1992_28_12_a0/}
}