@article{DE_1974_10_6_a20,
     author = {S. Ya. Yakubov and A. B. Aliev},
     title = {Almost periodic solutions of second order hyperbolic equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1142--1144},
     publisher = {mathdoc},
     volume = {10},
     number = {6},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_6_a20/}
}