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\bibitem{MiltonPereira_etal2008} {\textquotedblleft}\textit{Resonant tunneling in graphene microstructures}{\textquotedblright}. Milton Pereira J, Vasilopoulos P, Peeters FM, Microelectronics journal \textbf{39}, 534 (2008).   http://doi.org/10.1016/j.mejo.2007.07.099

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