@Book{Lommel1892,
author  = "Lommel, Eugen von",
title   = "Berechnung von Mischfarben",
year    = "1892",
address = "München",
series  = "Abhandlungen",
volume  = "Bd. 17, Abth. 3 = [9]",
url     = "https://publikationen.badw.de/de/003083055",
}