@Book{Pfaff1882,
author  = "Pfaff, Friedrich",
title   = "Einiges über Kalksteine und Dolomite",
year    = "1882",
address = "München",
series  = "Sitzungsberichte",
volume  = "1882,21",
url     = "https://publikationen.badw.de/en/003394708",
}