@article{DE_1989_25_6_a27,
     author = {G. R. Oganesyan},
     title = {An initial-value problem for some singular hyperbolic equations and {WKB-estimates} for its solutions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1062--1064},
     publisher = {mathdoc},
     volume = {25},
     number = {6},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_6_a27/}
}