Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TM_1934_5_a15, author = {S. Sobolev}, title = {Functionally-invariant solutions of wave equation}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {259--264}, publisher = {mathdoc}, volume = {5}, year = {1934}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TM_1934_5_a15/} }
S. Sobolev. Functionally-invariant solutions of wave equation. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Travaux de l'Institut Physico-Mathématique Stekloff, Section Mathématique, Tome 5 (1934), pp. 259-264. http://geodesic.mathdoc.fr/item/TM_1934_5_a15/