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\bibitem{Abdullah_etal2018} {\textquotedblleft}\textit{Graphene quantum blisters : a tunable system to confine charge carriers}{\textquotedblright}. Abdullah HM, Van der Donck M, Bahlouli H, Peeters FM, Van Duppen B, Applied physics letters \textbf{112}, 213101 (2018).   http://doi.org/10.1063/1.5023896

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