@Book{Aumann1975,
author  = "Aumann, Georg",
title   = "Konstruktion allgemeiner Konvexitäten",
year    = "1975",
address = "München",
series  = "Sitzungsberichte",
volume  = "1974,5",
url     = "https://publikationen.badw.de/en/003384343",
}