Coinage in Ninth-Century Northumbria: Metcalf, D.M. (ed.): Coinage in Ninth-Century Northumbria. The Tenth Oxford Symposium on Coinage and Monetary History (BAR, Brit. Ser. 180), Oxford 1987.
Coinage in Ninth-Century Northumbria: Metcalf, D.M. (ed.): Coinage in Ninth-Century Northumbria. The Tenth Oxford Symposium on Coinage and Monetary History (BAR, Brit. Ser. 180), Oxford 1987.