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\bibitem{Conti_etal2021} {\textquotedblleft}\textit{Electron-hole superfluidity in strained Si/Ge type II heterojunctions}{\textquotedblright}. Conti S, Saberi-Pouya S, Perali A, Virgilio M, Peeters FM, Hamilton AR, Scappucci G, Neilson D, npj Quantum Materials \textbf{6}, 41 (2021).   http://doi.org/10.1038/S41535-021-00344-3

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