@Book{Vogel1879,
author  = "Vogel, August",
title   = "Ueber Absorptionsfähigkeit der Humussubstanzen",
year    = "1879",
address = "München",
series  = "Sitzungsberichte",
volume  = "1879,10",
url     = "https://publikationen.badw.de/en/003384634",
}