@Book{Lehmann1934,
author  = "Lehmann, Paul",
title   = "Die mittelalterliche Dombibliothek zu Speyer. Vorgetragen am 3. Febr. 1934",
year    = "1934",
address = "München",
series  = "Sitzungsberichte",
volume  = "1934,4",
url     = "https://publikationen.badw.de/de/008940133",
}