@article{ZVMMF_1976_16_5_a12,
     author = {I. I. Kudish and V. A. Rykov},
     title = {Convergence to the centre and reflection of a spherical wave in a gas},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1209--1216},
     publisher = {mathdoc},
     volume = {16},
     number = {5},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1976_16_5_a12/}
}