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\bibitem{Neek-Amal_etal2013} {\textquotedblleft}\textit{Spiral graphone and one-sided fluorographene nanoribbons}{\textquotedblright}. Neek-Amal M, Beheshtian J, Shayeganfar F, Singh SK, Los JH, Peeters FM, Physical review : B : condensed matter and materials physics \textbf{87}, 075448 (2013).   http://doi.org/10.1103/PhysRevB.87.075448

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