@article{PPN594076412+DMDLOG_0002, title = {Vorrede.}, booktitle = {Analytische Geometrie der Ebene Teil 1}, series = {GDML\_Books}, publisher = {Teubner}, address = {Leipzig}, year = {1893}, pages = {III}, url = {http://dml.mathdoc.fr/item/PPN594076412+DMDLOG_0002} }
(éd.). Vorrede., dans Analytische Geometrie der Ebene Teil 1, GDML_Books, (1893), p. III. http://gdmltest.u-ga.fr/item/PPN594076412+DMDLOG_0002/