@Book{Messerschmitt(1908),
author  = "Messerschmitt, Johann Baptist",
title   = "Magnetische Ortsbestimmungen in Bayern",
year    = "(1908)",
address = "München",
series  = "Sitzungsberichte",
volume  = "1907,15",
url     = "https://publikationen.badw.de/en/003898180",
}