@Book{Nägeli1866,
author  = "Nägeli, Carl",
title   = "Aufzählung einiger Zwischenformen",
year    = "1866",
address = "München",
series  = "Sitzungsberichte",
volume  = "1866,1,13",
url     = "https://publikationen.badw.de/de/003403577",
}