Corpus nummorum saeculorum 9-11 qui in Suecia reperti sunt [3,4] : Catalogue of coins from the 9th-11th Centuries found in Sweden. Verzeichnis der in Schweden gefundenen Münzen des 9.-11. Jahrhunderts. 3 Skåne. 4. Maglarp- Ystad. - Malmer, Brita; Lagerqvist, Lars O. (Almqvist+Wiksell, 1987)