@article{PPN516973169+dmdlog44, title = {Clifford's Parallelen.}, booktitle = {Gehalten w\"ahrend des Sommersemesters 1890 Vorlesung 2}, series = {GDML\_Books}, year = {1890}, pages = {253}, url = {http://dml.mathdoc.fr/item/PPN516973169+dmdlog44} }
(éd.). Clifford's Parallelen., dans Gehalten während des Sommersemesters 1890 Vorlesung 2, GDML_Books, (1890), p. 253. http://gdmltest.u-ga.fr/item/PPN516973169+dmdlog44/