@Book{Kobell1869,
author  = "Kobell, Franz von",
title   = "Ueber einen Paragonit von Virgenthal in Tyrol",
year    = "1869",
address = "München",
series  = "Sitzungsberichte",
volume  = "1869,1,18",
url     = "https://publikationen.badw.de/de/003403957",
}