@article{01780411, title = {Method of replacing the variables for generalized symmetry of the D'Alembert equation.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {30}, year = {2002}, pages = {149-155}, doi = {10.1155/S0161171202012966}, zbl = {1010.35065}, language = {en}, url = {http://dml.mathdoc.fr/item/01780411} }
Kotel'nikov, Gennadii A. Method of replacing the variables for generalized symmetry of the D'Alembert equation.. International Journal of Mathematics and Mathematical Sciences, Tome 30 (2002) pp. 149-155. doi : 10.1155/S0161171202012966. http://gdmltest.u-ga.fr/item/01780411/