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\bibitem{Afanasov_etal2011} {\textquotedblleft}\textit{Nickel/carbon composite materials based on expanded graphite}{\textquotedblright}. Afanasov IM, Lebedev OI, Kolozhvary BA, Smirnov AV, Van Tendeloo G, New carbon materials \textbf{26}, 335 (2011).   http://doi.org/10.1016/S1872-5805(11)60085-1

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