@Book{Bauernfeind1868,
author  = "Bauernfeind, Carl Maximilian von",
title   = "Eine neue Eigenschaft des Prismas der Camera lucida",
year    = "1868",
address = "München",
series  = "Sitzungsberichte",
volume  = "1868,1,21",
url     = "https://publikationen.badw.de/de/003403931",
}