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\bibitem{Chen_etal2021} {\textquotedblleft}\textit{Direct observation of layer-stacking and oriented wrinkles in multilayer hexagonal boron nitride}{\textquotedblright}. Chen L, Elibol K, Cai H, Jiang C, Shi W, Chen C, Wang HS, Wang X, Mu X, Li C, Watanabe K, Taniguchi T, Guo Y, Meyer JC, Wang H, 2d Materials \textbf{8}, 024001 (2021).   http://doi.org/10.1088/2053-1583/ABD41E

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