@Book{Vogel1866,
author  = "Vogel, August",
title   = "Beobachtungen über Torfverkohlung",
year    = "1866",
address = "München",
series  = "Sitzungsberichte",
volume  = "1866,2,2",
url     = "https://publikationen.badw.de/de/003385082",
}