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\bibitem{Heyer_etal2014} {\textquotedblleft}\textit{Toward deep blue nano hope diamonds : heavily boron-doped diamond nanoparticles}{\textquotedblright}. Heyer S, Janssen W, Turner S, Lu Y-G, Yeap WS, Verbeeck J, Haenen K, Krueger A, ACS nano \textbf{8}, 5757 (2014).   http://doi.org/10.1021/nn500573x

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