@article{GDZPPN00228863X,
title = {On the Second Order Homogeneous Quadratic Differential Equation.},
journal = {Mathematische Annalen},
volume = {141},
year = {1960},
pages = {87-98},
zbl = {0106.05801},
url = {http://dml.mathdoc.fr/item/GDZPPN00228863X}
}
CHALKLEY, R. On the Second Order Homogeneous Quadratic Differential Equation.. Mathematische Annalen, Tome 141 (1960) pp. 87-98. http://gdmltest.u-ga.fr/item/GDZPPN00228863X/