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\bibitem{Masir_etal2008} {\textquotedblleft}\textit{Wavevector filtering through single-layer and bilayer graphene with magnetic barrier structures}{\textquotedblright}. Masir MR, Vasilopoulos P, Peeters FM, Applied physics letters \textbf{93}, 242103 (2008).   http://doi.org/10.1063/1.3049600

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