@article{MZM_1994_56_2_a13,
     author = {S. V. Zelik},
     title = {Almost-periodic solutions of a class of linear hyperbolic equations},
     journal = {Matemati\v{c}eskie zametki},
     pages = {146--149},
     publisher = {mathdoc},
     volume = {56},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1994_56_2_a13/}
}