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\bibitem{Barnes_etal1991} {\textquotedblleft}\textit{The observation and theory of optically detected magnetophonon resonance}{\textquotedblright}. Barnes DJ, Nicholas RJ, Peeters FM, Wu XG, Devreese JT, Singleton J, Langerak CJGM, Harris JJ, Foxon CT, Physical review letters \textbf{66}, 794 (1991)

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