@book{PPN590630229, title = {Geg - Hyp Abtheilung 5, Bd. 7}, series = {GDML\_Books}, publisher = {Ettinger}, address = {Gotha}, year = {1801}, language = {de}, url = {http://dml.mathdoc.fr/item/PPN590630229} }
(éd.). Geg - Hyp Abtheilung 5, Bd. 7. GDML_Books (1801), http://gdmltest.u-ga.fr/item/PPN590630229/