@Book{Vogel1871,
author  = "Vogel, August",
title   = "Ueber den Fettgehalt der Bier-Hefe",
year    = "1871",
address = "München",
series  = "Sitzungsberichte",
volume  = "1871,9.",
url     = "https://publikationen.badw.de/de/003392391",
}