1. Quantitative results of XRF analysis of ancient coins by monchromatic x-ray excitation;Avaldi;Archaeometry,1984
2. Thoughts on the beginnings of coinage
3. Ramage A. Craddock , P. 2000 King Croesus' gold, excavations at Sardis and the history of gold refining
4. The origin of electrum coinage;Wallace;American Journal of Archaeology,1987