@article{04190183, title = {Properties of solutions to a second order nonlinear differential equation.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {13}, year = {1990}, pages = {821-824}, doi = {10.1155/S0161171290001156}, zbl = {0722.34028}, language = {en}, url = {http://dml.mathdoc.fr/item/04190183} }
Kroopnick, Allan J. Properties of solutions to a second order nonlinear differential equation.. International Journal of Mathematics and Mathematical Sciences, Tome 13 (1990) pp. 821-824. doi : 10.1155/S0161171290001156. http://gdmltest.u-ga.fr/item/04190183/