@Book{Vogel1875,
author  = "Vogel, August",
title   = "Ueber den Stickstoffgehalt des Malzextraktes",
year    = "1875",
address = "München",
series  = "Sitzungsberichte",
volume  = "1875,8",
url     = "https://publikationen.badw.de/en/003391923",
}