@Book{Pringsheim1921,
author  = "Pringsheim, Alfred",
title   = "Elementare Funktionentheorie und komplexe Integration. Nachtrag",
year    = "1921",
address = "München",
series  = "Sitzungsberichte",
volume  = "1921,14",
url     = "https://publikationen.badw.de/en/020363481",
}