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\bibitem{Nicholas_etal1998} {\textquotedblleft}\textit{Minigaps and the quantum Hall effect in broken gap InAs/GaSb heterostructures}{\textquotedblright}. Nicholas RJ, Lakrimi M, Khym SW, Mason NJ, Poulter AJL, Vaughan T, Walker PJ, Maude DK, Portal JC, Symons DM, Peeters FM, Physica: B : condensed matter \textbf{256/258}, 207 (1998).   http://doi.org/10.1016/S0921-4526(98)00579-1

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