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\bibitem{Gershenzon_etal1976} Gershenzon, E. M., Orlova, S. L., Orlov, L. A., Ptitsina, N. G., \& Rabinovich, R. I. (1976). Intervalley cyclotron-impurity resonance of electrons in n-Ge. \textit{JETP Lett.}, \textit{24}(3), 125--128.

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