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\bibitem{Nowak_etal2008} {\textquotedblleft}\textit{Manipulation of two-electron states by the electric field in stacked self-assembled dots}{\textquotedblright}. Nowak MP, Szafran B, Peeters FM, Journal of physics : condensed matter \textbf{20}, 395225 (2008).   http://doi.org/10.1088/0953-8984/20/39/395225

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