@Book{Pringsheim1920,
author  = "Pringsheim, Alfred",
title   = "Elementare Funktionentheorie und komplexe Integration",
year    = "1920",
address = "München",
series  = "Sitzungsberichte",
volume  = "1920,8",
url     = "https://publikationen.badw.de/de/003900959",
}