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\bibitem{Doenen_etal2009} {\textquotedblleft}\textit{Diamond nucleation by carbon transport from buried nanodiamond TiO$_{2}$ sol-gel composites}{\textquotedblright}. Doenen M, Zhang L, Erni R, Williams OA, Hardy A, van Bael MK, Wagner P, Haenen K, Nesladek M, Van Tendeloo G, Advanced materials \textbf{21}, 670 (2009).   http://doi.org/10.1002/adma.200802305

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