@Book{Rohlfs1957,
author  = "Rohlfs, Gerhard",
title   = "Primitive Kuppelbauten in Europa. Vorgetragen am 5. Oktober 1956",
year    = "1957",
address = "München",
series  = "Abhandlungen",
volume  = "43",
url     = "https://publikationen.badw.de/de/012311461",
}