@article{GDZPPN002391252, title = {Kegelschnitte in desarguesschen Ebenen.}, journal = {Mathematische Zeitschrift}, volume = {78}, year = {1962}, pages = {55-85}, zbl = {0103.13504}, url = {http://dml.mathdoc.fr/item/GDZPPN002391252} }
Berz, Edgar. Kegelschnitte in desarguesschen Ebenen.. Mathematische Zeitschrift, Tome 78 (1962) pp. 55-85. http://gdmltest.u-ga.fr/item/GDZPPN002391252/