@Book{Günther1905,
author  = "Günther, Siegmund",
title   = "Das Pothenot'sche Problem auf der Kugelfläche",
year    = "1905",
address = "München",
series  = "Sitzungsberichte",
volume  = "1904,8",
url     = "https://publikationen.badw.de/en/003395037",
}