@article{05019315,
title = {Characterization of several classes of second-order ODEs by using differential invariants.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {2005},
year = {2005},
pages = {3661-3683},
doi = {10.1155/IJMMS.2005.3661},
zbl = {1100.34029},
language = {en},
url = {http://dml.mathdoc.fr/item/05019315}
}
Martín del Rey, A.; Muñoz Masqué, J. Characterization of several classes of second-order ODEs by using differential invariants.. International Journal of Mathematics and Mathematical Sciences, Tome 2005 (2005) pp. 3661-3683. doi : 10.1155/IJMMS.2005.3661. http://gdmltest.u-ga.fr/item/05019315/