Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1967__17_1_a1, author = {Belohorec, \v{S}tefan}, title = {On {Some} {Properties} of the {Equation} $y''(x)+f(x) y^{\alpha}(x) = 0, 0 < \alpha < 1$}, journal = {Mathematica slovaca}, pages = {10--19}, publisher = {mathdoc}, volume = {17}, number = {1}, year = {1967}, mrnumber = {0214854}, zbl = {0166.07702}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1967__17_1_a1/} }
Belohorec, Štefan. On Some Properties of the Equation $y''(x)+f(x) y^{\alpha}(x) = 0, 0 < \alpha < 1$. Mathematica slovaca, Tome 17 (1967) no. 1, pp. 10-19. http://geodesic.mathdoc.fr/item/MASLO_1967__17_1_a1/