@article{01621367, title = {Non-Noether symmetries in singular dynamical systems.}, journal = {Georgian Mathematical Journal}, volume = {8}, year = {2001}, pages = {27-32}, zbl = {1001.70015}, language = {en}, url = {http://dml.mathdoc.fr/item/01621367} }
Chavchanidze, G. Non-Noether symmetries in singular dynamical systems.. Georgian Mathematical Journal, Tome 8 (2001) pp. 27-32. http://gdmltest.u-ga.fr/item/01621367/