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\bibitem{Schowalter_etal2006} {\textquotedblleft}\textit{Ab initio computation of the mean inner Coulomb potential of wurtzite-type semiconductors and gold}{\textquotedblright}. Schowalter M, Rosenauer A, Lamoen D, Kruse P, Gerthsen D, Applied Physics Letters \textbf{88}, Artn 232108 (2006).   http://doi.org/10.1063/1.2210453

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