@book{id_12011,
author = "Pfaff, Johann Wilhelm Andreas",
title = "Betrachtungen über die Spirale",
year = "1832",
address = "München",
publisher = "Akad. der Wiss.",
series = "Abhandlungen",
volume = "1,1",
url = "http://publikationen.badw.de/de/003082936",
}