@article{ZVMMF_1997_37_8_a10,
     author = {A. M. Khapaev and A. A. Tsygankov},
     title = {An integral representation of solutions to the {Klein{\textendash}Gordon} equation},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {975--978},
     year = {1997},
     volume = {37},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1997_37_8_a10/}
}