@Book{Carathéodory1933,
author  = "Carathéodory, Constantin",
title   = "Über die strengen Lösungen des Dreikörperproblems",
year    = "1933",
address = "München",
series  = "Sitzungsberichte",
volume  = "1933,16",
url     = "https://publikationen.badw.de/en/003383413",
}