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\bibitem{Aierken_etal2016} {\textquotedblleft}\textit{Intrinsic magnetism in penta-hexa-graphene: A first-principles study}{\textquotedblright}. Aierken Y, Leenaerts O, Peeters FM, Physical review B \textbf{94}, 155410 (2016).   http://doi.org/10.1103/PHYSREVB.94.155410

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