Descriptions of Nordic towns and town-like settlements in early literature.

von Helle, Knut.
Veröffentlicht in Developments around the Baltic and the North Sea in the Viking Age. The 12th Viking Congress.
Stockholm : Stalling Verlag, 1994.
Umfang/Format: 20-31.

The history of the early Viking Age in Norway.

von Helle, Knut
Veröffentlicht in Ireland and Scandinavia in the Early Viking Age.
Dublin : Four Courts Press, 1998.
Umfang/Format: 239-258 : Abb. Taf.

The Cambridge history of Scandinavia

Cambridge : University Press, 2003.
Umfang/Format: xx, 872 p., [34] p. of plates : ill., maps ; 23 cm.

The Cambridge History of Scandinavia : 1. Prehistory to 1520.

Cambridge : Cambridge University Press, 2003.
Umfang/Format: XX, 872 S. : Abb. ; 24 cm.