@article{104712, author = {Milo\v s R\'ab}, title = {On the existence of solutions of certain nonlinear equations occurring in the transformation theory of a linear second order differential equation with complex valued coefficients}, journal = {Archivum Mathematicum}, volume = {006}, year = {1970}, pages = {75-78}, zbl = {0236.34003}, mrnumber = {0291532}, language = {en}, url = {http://dml.mathdoc.fr/item/104712} }
Ráb, Miloš. On the existence of solutions of certain nonlinear equations occurring in the transformation theory of a linear second order differential equation with complex valued coefficients. Archivum Mathematicum, Tome 006 (1970) pp. 75-78. http://gdmltest.u-ga.fr/item/104712/
Second order complex differential equations with a real independent variable, Pac. J. Math., vol. VIII (1958), 187-200. (1958) | MR 0098213
Behaviour of solutions of second order self-adjoint differential equations, Proc. Amer. Math. Soc. 6 (1955), 247-251. (1955) | MR 0070804
The non linear differential equation, Proc. Ameг. Math. Soc, vol. 1 (1950), 681. (1950)
Neue Herleitung der Sturm-Liouvilleschen Reihenentwicklung stetiger Funktionen, Math. Ann. 95 (1926), 499-518. (1926) | MR 1512291
Les développements asymptotiques des solutions de l'équation $(py')' + qy = 0$, Arch. Math. (Bгno), T 2 (1966), 1-17. (1966) | MR 0199488