@Book{Mordtmann1871,
author  = "Mordtmann, Andreas David",
title   = "Chronologie der ältesten muhammedanischen Münzen",
year    = "1871",
address = "München",
series  = "Sitzungsberichte",
volume  = "1871,23",
url     = "https://publikationen.badw.de/de/007457760",
}