I.R. Selimkhanov, “Spectral Analyses of Metallic Articles from Archeological Monuments of the Caucasus”, PPS XXVIII, 1962. P. 68–79, etc.
135
I.R. Selimkhanov, “Was Native Copper Used in Trans-Caucasia in Aeneolithic Times?” PPS XXX. 1964. P. 66–74, etc.
136
Ts.N. Abesadze, R.A. Bakhtadze, T.A. Dvali, O.M. Japaridze, On the History of Copper and Bronze Metallurgy in Georgia, Tbilisi, 1958, etc.
137
(a) S. Piggott, Ancient Europe, Edinburgh, 1965. P. 74; (b) F. Hančar, “Die Nadelformen des Prähistorischen Kaukasusgebietes”, ESA 7. 1932. P. 113–182.