@article{104697, author = {Lee Lorch}, title = {Two elementary remarks on non-linear differential equations of the second order}, journal = {Archivum Mathematicum}, volume = {005}, year = {1969}, pages = {173-175}, zbl = {0242.34033}, mrnumber = {0277818}, language = {en}, url = {http://dml.mathdoc.fr/item/104697} }
Lorch, Lee. Two elementary remarks on non-linear differential equations of the second order. Archivum Mathematicum, Tome 005 (1969) pp. 173-175. http://gdmltest.u-ga.fr/item/104697/
Oscillation and monotonity theorems concerning non-linear differential equations of the second order, Acta Mathematica Academiae Scientiarum Hungaricae, Vol. 9 (1958), pp. 83-104. (1958) | MR 0095321
Lineare differentialtransformationen 2. ordnung, Berlin, 1967. (1967)
Comparison of two formulations of Sonin's theorem and of their respective applications to Bessel functions, Studia Scientiarum Mathematicarum Hungarica, Vol. 1 (1966), pp. 141-145. (1966) | MR 0204723 | Zbl 0148.30101