1. Persian Metal Technology 700–1300;Allen,1979
2. Bronze Casting and Bronze Alloys in Ancient China;Barnard,1961
3. The Rise of Civilization in East Asia – The Archaeology of China, Korea and Japan;Barnes,1999
4. The composition of ancient eastern bronzes;Chikashige;Journal of the Chemical Society (London),1920
5. Cho, S.G., Hong, J.Y., Cho, J.K., Lee, M.H., Kim, H.I., Oh, J.H., Byun, Y.H., Lee, H.J., Lee, S.B., Shin, C.H., Gal, J.E., Choi, S.M., 2001. Excavation Report of the Nonsan Wonboongni Site. Jungang Research Center of the Cultural Heritage, Daejeon Korea (in Korean).