@article{DE_1987_23_12_a4,
     author = {G. N. Mil'shtein},
     title = {Strictly positive {Lyapunov} functionals for linear systems with aftereffect},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2051--2060},
     publisher = {mathdoc},
     volume = {23},
     number = {12},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1987_23_12_a4/}
}