@Book{Lehmann1921,
author  = "Lehmann, Paul",
title   = "Holländische Reisefrüchte. I - III",
year    = "1921",
address = "München",
series  = "Sitzungsberichte",
volume  = "1920,13",
url     = "https://publikationen.badw.de/de/008048763",
}