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\bibitem{Polyakova_etal2008} Polyakova, O. N., Tikhonov, V. V., Dzardanov, A. L., Boyarskii, D. A., \& Gol{\textquoteright}tsman, G. N. (2008). Dielectric characteristics of ore minerals in a 10{\textendash}40 GHz frequency range. \textit{Tech. Phys. Lett.}, \textit{34}(11), 967--970.

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