@article{PPN37649882X+dmdlog52, title = {Analytische Definition; Einf\"uhrung homogener Koordinaten.}, booktitle = {Geometrie Bd. 2}, series = {GDML\_Books}, year = {1968}, pages = {92}, url = {http://dml.mathdoc.fr/item/PPN37649882X+dmdlog52} }
(éd.). Analytische Definition; Einführung homogener Koordinaten., dans Geometrie Bd. 2, GDML_Books, (1968), p. 92. http://gdmltest.u-ga.fr/item/PPN37649882X+dmdlog52/