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\bibitem{Chaves_etal2010} {\textquotedblleft}\textit{Wave-packet dynamics and valley filter in strained graphene}{\textquotedblright}. Chaves A, Covaci L, Rakhimov KY, Farias GA, Peeters FM, Physical review : B : condensed matter and materials physics \textbf{82}, 205430 (2010).   http://doi.org/10.1103/PhysRevB.82.205430

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