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\bibitem{Polyakova_etal2008} Polyakova ON, Tikhonov VV, Dzardanov AL, Boyarskii DA, Gol{\textquoteright}tsman GN. Dielectric characteristics of ore minerals in a 10{\textendash}40 GHz frequency range. Tech Phys Lett. 2008;34(11):967--70.

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