@Book{Pettenkofer1862,
author  = "Pettenkofer, Max von",
title   = "Ueber einen neuen Respirations-Apparat",
year    = "1862",
address = "München",
series  = "Abhandlungen",
volume  = "Bd. 9, Abth. 2 = [5]",
url     = "https://publikationen.badw.de/de/003082904",
}