@article{DE_2000_36_3_a15,
     author = {A. M. A. Abou-El-Ela and A. I. Sadek},
     title = {Asymptotic behavior of solutions of some nonautonomous differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {415--417},
     publisher = {mathdoc},
     volume = {36},
     number = {3},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2000_36_3_a15/}
}