@Book{HönigschmidBirckenbach1922,
author  = "Hönigschmid, Otto and Birckenbach, Lothar [Sonst.]",
title   = "Revision des Atomgewichtes des Berylliums. Analyse des Berylliumchlorids. 1. Mitteilung",
year    = "1922",
address = "München",
series  = "Sitzungsberichte",
volume  = "1921,2",
url     = "https://publikationen.badw.de/en/020245386",
}