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\bibitem{Topalovic_etal2020} {\textquotedblleft}\textit{Asymmetric versus symmetric HgTe/Cd$_{x}$Hg$_{1-x}$ Te double quantum wells: Bandgap tuning without electric field}{\textquotedblright}. Topalovic DB, Arsoski VV, Tadic MZ, Peeters FM, Journal Of Applied Physics \textbf{128}, 064301 (2020).   http://doi.org/10.1063/5.0016069

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