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\bibitem{Riva_etal2002} {\textquotedblleft}\textit{Theory of trions in quantum wells}{\textquotedblright}. Riva C, Peeters FM, Varga K, Physica. E: Low-dimensional systems and nanostructures
T2 -- 14th International Conference on the Electronic Properties of, Two-Dimensional Systems, JUL 30-AUG 03, 2001, PRAGUE, CZECH REPUBLIC \textbf{12}, 543 (2002).   http://doi.org/10.1016/S1386-9477(01)00484-2

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