@Book{Hertwig1937,
author  = "Hertwig, Richard von",
title   = "Über den Bau der Peripyleen",
year    = "1937",
address = "München",
series  = "Abhandlungen",
volume  = "Neue Folge, Heft 41",
url     = "https://publikationen.badw.de/de/006296959",
}