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\bibitem{Moldovan_etal2012} {\textquotedblleft}\textit{Resonant valley filtering of massive Dirac electrons}{\textquotedblright}. Moldovan D, Masir MR, Covaci L, Peeters FM, Physical review : B : condensed matter and materials physics \textbf{86}, 115431 (2012).   http://doi.org/10.1103/PhysRevB.86.115431

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