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\bibitem{Masir_etal2013} {\textquotedblleft}\textit{Pseudo magnetic field in strained graphene : revisited}{\textquotedblright}. Masir MR, Moldovan D, Peeters FM, Solid state communications \textbf{175}, 76 (2013).   http://doi.org/10.1016/j.ssc.2013.04.001

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