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\bibitem{Verreck_etal2015} {\textquotedblleft}\textit{15-band spectral envelope function formalism applied to broken gap tunnel field-effect transistors}{\textquotedblright}. Verreck D, Van de Put ML, Verhulst AS, Sor{\'e}e B, Magnus W, Dabral A, Thean A, Groeseneken G, 18th International Workshop On Computational Electronics (iwce 2015)  (2015).   http://doi.org/10.1109/IWCE.2015.7301988

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