@article{SJIM_2013_16_1_a12,
     author = {Yu. V. Shan'ko},
     title = {Geveralized functionally-invariant nonhomogeneous wave equation},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {126--137},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2013_16_1_a12/}
}