@article{GDZPPN00237661X, title = {Denjoysche und Perronsche Integration}, journal = {Mathematische Zeitschrift}, volume = {40}, year = {1936}, pages = {184-199}, zbl = {0014.05502}, url = {http://dml.mathdoc.fr/item/GDZPPN00237661X} }
Ridder, J. Denjoysche und Perronsche Integration. Mathematische Zeitschrift, Tome 40 (1936) pp. 184-199. http://gdmltest.u-ga.fr/item/GDZPPN00237661X/