@article{GDZPPN002373122, title = {The Approximately Continuous Perron Integral}, journal = {Mathematische Zeitschrift}, volume = {34}, year = {1932}, pages = {270-278}, zbl = {0002.38604}, url = {http://dml.mathdoc.fr/item/GDZPPN002373122} }
Burkill, J. C.,. The Approximately Continuous Perron Integral. Mathematische Zeitschrift, Tome 34 (1932) pp. 270-278. http://gdmltest.u-ga.fr/item/GDZPPN002373122/