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\bibitem{He_etal2019} {\textquotedblleft}\textit{Isolating hydrogen in hexagonal boron nitride bubbles by a plasma treatment}{\textquotedblright}. He L, Wang H, Chen L, Wang X, Xie H, Jiang C, Li C, Elibol K, Meyer J, Watanabe K, Taniguchi T, Wu Z, Wang W, Ni Z, Miao X, Zhang C, Zhang D, Wang H, Xie X, Nature communications \textbf{10}, 2815 (2019).   http://doi.org/10.1038/s41467-019-10660-9

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