@book{PPN547467915, title = {Das XVI. Jahrhundert Heft 1}, series = {GDML\_Books}, publisher = {Wyss}, address = {Bern}, year = {1888}, language = {ger}, url = {http://dml.mathdoc.fr/item/PPN547467915} }
Graf, Johann Heinrich. Das XVI. Jahrhundert Heft 1. GDML_Books (1888), http://gdmltest.u-ga.fr/item/PPN547467915/