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\bibitem{Shi_etal1995} {\textquotedblleft}\textit{Magneto-polaron effect on shallow donors in bulk GaAs and on D$^{0}$ and D$^{-}$ in GaAs/AlGaAs superlattices}{\textquotedblright}. Shi JM, Peeters FM, Devreese JT, Physica: B : condensed matter \textbf{204}, 344 (1995).   http://doi.org/10.1016/0921-4526(94)00285-4

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