@book{PPN584723776, title = {Die Grundoperazionen 1. Abth.}, series = {GDML\_Books}, publisher = {Gerstenberg}, address = {Hildesheim}, year = {1844}, language = {de}, url = {http://dml.mathdoc.fr/item/PPN584723776} }
Hartmann, Johann Joseph Gerhard. Die Grundoperazionen 1. Abth.. GDML_Books (1844), http://gdmltest.u-ga.fr/item/PPN584723776/