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\bibitem{Liu_etal2008} {\textquotedblleft}\textit{The merging of silica-surfactant microspheres under hydrothermal conditions}{\textquotedblright}. Liu S, Lebedev OI, Mertens M, Meynen V, Cool P, Van Tendeloo G, Vansant EF, Microporous and mesoporous materials: zeolites, clays, carbons and related materials \textbf{116}, 141 (2008).   http://doi.org/10.1016/j.micromeso.2008.03.034

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