@Book{Unger1875,
author  = "Unger, Georg Friedrich",
title   = "Der attische Kalender während des peloponnesischen Krieges",
year    = "1875",
address = "München",
series  = "Sitzungsberichte",
volume  = "1875,2,1",
url     = "https://publikationen.badw.de/en/007458709",
}