@article{GDZPPN002537664,
title = {Properties of solutions of the differential equation xx'' - kx'...+ f(x) = 0.},
journal = {Publications de l'Institut Math\'ematique [Elektronische Ressource]},
volume = {38},
year = {1978},
pages = {189-196},
zbl = {0419.34001},
url = {http://dml.mathdoc.fr/item/GDZPPN002537664}
}
Utz, W.R. Properties of solutions of the differential equation xx'' - kx'...+ f(x) = 0.. Publications de l'Institut Mathématique [Elektronische Ressource], Tome 38 (1978) pp. 189-196. http://gdmltest.u-ga.fr/item/GDZPPN002537664/