@article{DAN_1991_319_3_a9,
     author = {A. A. Martynyuk},
     title = {A new direction in the method of matrix {Lyapunov} functions},
     journal = {Doklady Akademii Nauk},
     pages = {554--557},
     publisher = {mathdoc},
     volume = {319},
     number = {3},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_319_3_a9/}
}