@Book{Beurlen1947,
author  = "Beurlen, Karl",
title   = "Beiträge zur Stammesgeschichte der Muscheln",
year    = "1947",
address = "München",
series  = "Sitzungsberichte",
volume  = "1944,9",
url     = "https://publikationen.badw.de/de/003395637",
}