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@article{ARM_1979__15_3_a0, author = {Bartu\v{s}ek, Miroslav}, title = {On zeros of solutions of the differential equation $y''+f(t,y)g(y')=0$}, journal = {Archivum mathematicum}, pages = {129--132}, publisher = {mathdoc}, volume = {15}, number = {3}, year = {1979}, mrnumber = {562336}, zbl = {0431.34025}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1979__15_3_a0/} }
Bartušek, Miroslav. On zeros of solutions of the differential equation $y''+f(t,y)g(y')=0$. Archivum mathematicum, Tome 15 (1979) no. 3, pp. 129-132. http://geodesic.mathdoc.fr/item/ARM_1979__15_3_a0/