@article{DE_1969_5_8_a23,
     author = {T. Wang},
     title = {A remark on the article {``A} certain criterion for {Ljapunov} stability''},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1537--1538},
     publisher = {mathdoc},
     volume = {5},
     number = {8},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_8_a23/}
}