See:
- K. Aslihan Yener , “The Archaeometry of Silver in Anatolia: The Bolkardağ Mining District.” American Journal of Archaeology, vol. 90, no. 4, 1986, pp. 469–472
- http://www.tayproject.org/TAYages.fm$Retrieve?CagNo=2153&html=ages_detail_e.html&layout=web