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@article{TRSPY_1934_5_a15, author = {S. Sobolev}, title = {Functionally-invariant solutions of wave equation}, journal = {Informatics and Automation}, pages = {259--264}, publisher = {mathdoc}, volume = {5}, year = {1934}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1934_5_a15/} }
S. Sobolev. Functionally-invariant solutions of wave equation. Informatics and Automation, Travaux de l'Institut Physico-Mathématique Stekloff, Section Mathématique, Tome 5 (1934), pp. 259-264. http://geodesic.mathdoc.fr/item/TRSPY_1934_5_a15/