@book{PPN592283178, title = {Arithmetik Bd. 1, Abth. 1}, series = {GDML\_Books}, publisher = {Hahn}, year = {1877}, language = {de}, url = {http://dml.mathdoc.fr/item/PPN592283178} }
Wittstein, Theodor. Arithmetik Bd. 1, Abth. 1. GDML_Books (1877), http://gdmltest.u-ga.fr/item/PPN592283178/