@book{PPN588391387, title = {Die Elemente der Geometrie Abth. 2}, series = {GDML\_Books}, publisher = {Heinrichshofen}, address = {Magdeburg}, year = {1815}, language = {de}, url = {http://dml.mathdoc.fr/item/PPN588391387} }
Matthias, Johann Andreas. Die Elemente der Geometrie Abth. 2. GDML_Books (1815), http://gdmltest.u-ga.fr/item/PPN588391387/