@book{PPN593233409,
title = {Grundgesetze der Arithmetik Bd. 1},
series = {GDML\_Books},
publisher = {Pohle},
address = {Jena},
year = {1893},
language = {de},
url = {http://dml.mathdoc.fr/item/PPN593233409}
}
Frege, Friedrich Ludwig Gottlob. Grundgesetze der Arithmetik Bd. 1. GDML_Books (1893), http://gdmltest.u-ga.fr/item/PPN593233409/