@Book{Hellmich1960,
author  = "Hellmich, Walter",
title   = "Die Sauria des Gran Chaco und seiner Randgebiete",
year    = "1960",
address = "München",
series  = "Abhandlungen",
volume  = "101",
url     = "https://publikationen.badw.de/de/001979524",
}