Current Events: Dating of the KBS Tuff and Homo rudolfensis John G. Mitchell, Frank J. Fitch, Jeffrey A. Miller • 1996
A survey of British metamorphic hone stones of the 9th to 15th centuries AD in the light of potassium-argon and natural remanent magnetization studies D.D.B. Crosby, John G. Mitchell • 1987
Potassium-argon ages of schist honestones from the viking age sites at Kaupang (Norway), Aggersborg (Denmark), Hedeby (West Germany) and Wolin (Poland), and their archaeological implications H.G. Resi, H. Askvik, John G. Mitchell • 1984