@book{id_9835,
author = "Nielsen, Niels",
title = "Der Legendre-Besselsche Kettenbruch",
year = "1909",
address = "München",
publisher = "Verl.d.K.B.Akad.d.Wiss.",
series = "Sitzungsbericht der Bayerischen Akademie der Wissenschaften",
volume = "1908,6.",
url = "http://publikationen.badw.de/de/020338161",
}