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\bibitem{Wu_etal2000} {\textquotedblleft}\textit{Blocking of the polaron effect and spin-split cyclotron resonance in a two-dimensional electron gas}{\textquotedblright}. Wu XG, Peeters FM, Wang YJ, McCombe BD, Physical review letters \textbf{84}, 4934 (2000).   http://doi.org/10.1103/PhysRevLett.84.4934

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