@Book{Hager1944,
author  = "Hager, Anton",
title   = "Symmetrische Inzidenztafeln finiter Geometrien",
year    = "1944",
address = "München",
series  = "Sitzungsberichte",
volume  = "1943,2",
url     = "https://publikationen.badw.de/de/003395599",
}