@article{DE_1965_1_11_a5,
     author = {M. K. Yakovlev},
     title = {On a method for constructing {Ljapunov's} function for linear systems with variable coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1488--1492},
     publisher = {mathdoc},
     volume = {1},
     number = {11},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1965_1_11_a5/}
}