@article{DE_2002_38_8_a8,
     author = {D. P. Kostomarov},
     title = {A {Cauchy} {Problem} for an {Ultrahyperbolic} {Equation}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1085--1090},
     publisher = {mathdoc},
     volume = {38},
     number = {8},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_8_a8/}
}