@Book{Broili1929,
author  = "Broili, Ferdinand",
title   = "Acanthaspiden aus dem rheinischen Unterdevon",
year    = "1929",
address = "München",
series  = "Sitzungsberichte",
volume  = "1929,9",
url     = "https://publikationen.badw.de/en/003383283",
}