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\bibitem{Hermans_etal2007} {\textquotedblleft}\textit{Silica-supported chromium oxide: colloids as building blocks}{\textquotedblright}. Hermans I, Breynaert E, Poelman H, de Gryse R, Liang D, Van Tendeloo G, Maes A, Peeters J, Jacobs P, Physical chemistry, chemical physics \textbf{9}, 5382 (2007).   http://doi.org/10.1039/b706601e

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