@book{PPN517627590, title = {Die Mathematik Theil 1}, series = {GDML\_Books}, year = {1895}, language = {ger}, url = {http://dml.mathdoc.fr/item/PPN517627590} }
(éd.). Die Mathematik Theil 1. GDML_Books (1895), http://gdmltest.u-ga.fr/item/PPN517627590/