@article{PPN588388580+DMDLOG_0007, title = {Abtheilung IV.}, booktitle = {Theorie der Transformationsgruppen Abschn. 2}, series = {GDML\_Books}, publisher = {Teubner}, address = {Leipzig}, year = {1890}, pages = {292}, url = {http://dml.mathdoc.fr/item/PPN588388580+DMDLOG_0007} }
(éd.). Abtheilung IV., dans Theorie der Transformationsgruppen Abschn. 2, GDML_Books, (1890), p. 292. http://gdmltest.u-ga.fr/item/PPN588388580+DMDLOG_0007/