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\bibitem{Khazaei_etal2018} {\textquotedblleft}\textit{Electronic structures of iMAX phases and their two-dimensional derivatives: A family of piezoelectric materials}{\textquotedblright}. Khazaei M, Wang V, Sevik C, Ranjbar A, Arai M, Yunoki S, Physical review materials \textbf{2}, 074002 (2018).   http://doi.org/10.1103/PHYSREVMATERIALS.2.074002

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