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\bibitem{Felten_etal2009} {\textquotedblleft}\textit{The role of oxygen at the interface between titanium and carbon nanotubes}{\textquotedblright}. Felten A, Suarez-Martinez I, Ke X, Van Tendeloo G, Ghijsen J, Pireaux J-J, Drube W, Bittencourt C, Ewels CP, ChemPhysChem : a European journal of chemical physics and physical chemistry \textbf{10}, 1799 (2009).   http://doi.org/10.1002/cphc.200900193

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