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\bibitem{Slachmuylders_etal2008} {\textquotedblleft}\textit{Effect of a metallic gate on the energy levels of a shallow donor}{\textquotedblright}. Slachmuylders AF, Partoens B, Peeters FM, Magnus W, Applied physics letters \textbf{92}, 083104 (2008).   http://doi.org/10.1063/1.2888742

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