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\bibitem{Janssens_etal2001} {\textquotedblleft}\textit{Magnetic field dependence of the xciton energy in type I and type II quantum disks}{\textquotedblright}. Janssens KL, Peeters FM, Schweigert VA, Partoens B, Physica: B : condensed matter \textbf{298}, 277 (2001).   http://doi.org/10.1016/S0921-4526(01)00316-7

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