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\bibitem{Bittencourt_etal2007} {\textquotedblleft}\textit{Decorating carbon nanotubes with nickel nanoparticles}{\textquotedblright}. Bittencourt C, Felten A, Ghijsen J, Pireaux J-J, Drube W, Erni R, Van Tendeloo G, Chemical physics letters \textbf{436}, 368 (2007).   http://doi.org/10.1016/j.cplett.2007.01.065

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