@book{id_7965,
author = "Sommerfeld, Arnold",
title = "Zur Theorie der Balmerschen Serie",
year = "1915",
address = "München",
publisher = "Verl.d.K.B.Akad.d.Wiss.",
series = "Sitzungsbericht der Bayerischen Akademie der Wissenschaften",
volume = "1915,20.",
url = "http://publikationen.badw.de/de/003395521",
}