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\bibitem{Rios_etal2018} {\textquotedblleft}\textit{Evidence from quantum Monte Carlo simulations of large-gap superfluidity and BCS-BEC crossover in double electron-hole layers}{\textquotedblright}. Rios PL, Perali A, Needs RJ, Neilson D, Physical review letters \textbf{120}, 177701 (2018).   http://doi.org/10.1103/PHYSREVLETT.120.177701

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