@article{01380009,
title = {Liouvillian first integrals of second order polynomial differential equations.},
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {1999},
year = {1999},
zbl = {0939.34002},
language = {en},
url = {http://dml.mathdoc.fr/item/01380009}
}
Christopher, Colin. Liouvillian first integrals of second order polynomial differential equations.. Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 1999 (1999) . http://gdmltest.u-ga.fr/item/01380009/