@Book{Helbig1880,
author  = "Helbig, Wolfgang",
title   = "Ueber den Pileus der alten Italiker",
year    = "1880",
address = "München",
series  = "Sitzungsberichte",
volume  = "1880,11",
url     = "https://publikationen.badw.de/en/007459053",
}