@article{GDZPPN002474905, title = {Properties of Solutions of u'' + g(t)u2n-1 = 0, II.}, journal = {Monatshefte f\"ur Mathematik}, volume = {69}, year = {1965}, pages = {353-361}, zbl = {0144.10701}, url = {http://dml.mathdoc.fr/item/GDZPPN002474905} }
Utz, W.R. Properties of Solutions of u'' + g(t)u2n-1 = 0, II.. Monatshefte für Mathematik, Tome 69 (1965) pp. 353-361. http://gdmltest.u-ga.fr/item/GDZPPN002474905/