@Book{Oppolzer1880,
author  = "Oppolzer, Theodor von",
title   = "Über die Berechnung der wahren Anomalie in nahezu parabolischen Bahnen",
year    = "1880",
address = "München",
series  = "Abhandlungen",
volume  = "Bd. 13, Abth. 3 = [10]",
url     = "https://publikationen.badw.de/en/003082990",
}