Malmer, Brita: Nordiska Mynt före år 1000, Lund 1966
Moesgaard, Jens Christian: King Harold's Cross Coinage. Christian Coins for the Merchants of Haithabu and the King's Soldiers. Publications from the National Museum. Studies in Archaeology & History Vol. 20-2 Jelling Series, Gylling 2015 - Forside
