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\bibitem{Varykhalov_etal2012} {\textquotedblleft}\textit{Intact dirac cones at broken sublattice symmetry : photoemission study of graphene on Ni and Co}{\textquotedblright}. Varykhalov A, Marchenko D, Sanchez-Barriga J, Scholz MR, Verberck B, Trauzettel B, Wehling TO, Carbone C, Rader O, Physical review X \textbf{2}, 041017 (2012).   http://doi.org/10.1103/PhysRevX.2.041017

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