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\bibitem{Nguyen_etal2020} {\textquotedblleft}\textit{Interfacial characteristics, Schottky contact, and optical performance of a graphene/Ga2SSe van der Waals heterostructure: Strain engineering and electric field tunability}{\textquotedblright}. Nguyen HTT, Obeid MM, Bafekry A, Idrees M, Vu TV, Phuc H V, Hieu NN, Le Hoa T, Amin B, Nguyen C V, Physical Review B \textbf{102}, 075414 (2020).   http://doi.org/10.1103/PHYSREVB.102.075414

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