@Book{Harless1855,
author  = "Harless, Emil",
title   = "Theorie und Anwendung des Seitendruckspirometers, eines neuen Instrumentes zur Bestimmung der Respirationsluft",
year    = "1855",
address = "München",
series  = "Abhandlungen",
volume  = "Bd. 7, Abth. 3 = [11]",
url     = "https://publikationen.badw.de/de/003384693",
}