@Book{Ensslin1942,
author  = "Ensslin, Wilhelm",
title   = "Zur Ostpolitik des Kaisers Diokletian",
year    = "1942",
address = "München",
series  = "Sitzungsberichte",
volume  = "1942,1",
url     = "https://publikationen.badw.de/de/011392252",
}