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\bibitem{Wang_etal1998} {\textquotedblleft}\textit{High-field cyclotron resonance and electron-phonon interaction in modulation-doped multiple quantum well structures}{\textquotedblright}. Wang YJ, Jiang ZX, McCombe BD, Peeters FM, Wu XG, Hai GQ, Eusfis TJ, Schaff W, Physica: B : condensed matter \textbf{256/258}, 215 (1998).   http://doi.org/10.1016/S0921-4526(98)00572-9

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