@article{DE_1986_22_4_a12,
     author = {B. I. Ptashnic and P. I. Shtabalyuk},
     title = {A boundary value problem for hyperbolic equations in a class of functions that are almost periodic with respect to space variables},
     journal = {Differencialʹnye uravneni\^a},
     pages = {669--678},
     publisher = {mathdoc},
     volume = {22},
     number = {4},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_4_a12/}
}