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\bibitem{Cukaric_etal2016} {\textquotedblleft}\textit{The 30-band k . p theory of valley splitting in silicon thin layers}{\textquotedblright}. Cukaric NA, Partoens B, Tadic MZ, Arsoski VV, Peeters FM, Journal of physics : condensed matter \textbf{28}, 195303 (2016).   http://doi.org/10.1088/0953-8984/28/19/195303

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