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Gopher, A.; Tsuk, T.; Shalev, S. & Gophna, R. (August–October 1990). "Earliest Gold Artifacts in the Levant". Current Anthropology. 31 (4): 436–443. doi:10.1086/203868. JSTOR2743275. S2CID143173212.
Meeks, N.; La Niece, S.; Estevez, P. (2002). "The technology of early platinum plating: a gold mask of the La Tolita culture, Ecuador". Archaeometry. 44 (2). Wiley: 273–284. doi:10.1111/1475-4754.t01-1-00059. ISSN0003-813X.