@article{DE_1998_34_2_a16,
     author = {N. J. Yurchuk and Al-Momani Raid Rasheed},
     title = {A classical solution, weakened on the axis, of the centrally symmetric mixed problem for three-dimensional hyperbolic equations of even order},
     journal = {Differencialʹnye uravneni\^a},
     pages = {260--265},
     publisher = {mathdoc},
     volume = {34},
     number = {2},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_2_a16/}
}