@Book{Pringsheim1907,
author  = "Pringsheim, Alfred",
title   = "Über das Additions-Theorem der elliptischen Funktionen",
year    = "1907",
address = "München",
series  = "Sitzungsberichte",
volume  = "1906,11",
url     = "https://publikationen.badw.de/en/003388874",
}