@article{GDZPPN002269309, title = {Oszillationstheoreme oberhalb der Stieltjesschen Grenze}, journal = {Mathematische Annalen}, volume = {90}, year = {1923}, pages = {130-146}, zbl = {49.0317.02}, url = {http://dml.mathdoc.fr/item/GDZPPN002269309} }
Haupt, O.; Hill, E. Oszillationstheoreme oberhalb der Stieltjesschen Grenze. Mathematische Annalen, Tome 90 (1923) pp. 130-146. http://gdmltest.u-ga.fr/item/GDZPPN002269309/