@article{DE_1989_25_8_a23,
     author = {A. O. Ignatyev},
     title = {Stability of almost periodic systems with respect to some of the variables},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1446--1448},
     publisher = {mathdoc},
     volume = {25},
     number = {8},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_8_a23/}
}