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\bibitem{Saniz_etal2013} {\textquotedblleft}\textit{A simplified approach to the band gap correction of defect formation energies : Al, Ga, and In-doped ZnO}{\textquotedblright}. Saniz R, Xu Y, Matsubara M, Amini MN, Dixit H, Lamoen D, Partoens B, The journal of physics and chemistry of solids \textbf{74}, 45 (2013).   http://doi.org/10.1016/j.jpcs.2012.07.017

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