@Book{Beetz1884,
author  = "Beetz, Wilhelm von",
title   = "Ueber Normalelemente für elektrometrische Messungen",
year    = "1884",
address = "München",
series  = "Sitzungsberichte",
volume  = "1884,10",
url     = "https://publikationen.badw.de/en/003394516",
}