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\bibitem{Yang_etal2009} {\textquotedblleft}\textit{One-pot synthesis of catalytically stable and active nanoreactors: encapsulation of size-controlled nanoparticles within a hierarchically macroporous core@ordered mesoporous shell system}{\textquotedblright}. Yang X-Y, Li Y, Van Tendeloo G, Xiao F-S, Su B-L, Advanced materials \textbf{21}, 1368 (2009).   http://doi.org/10.1002/adma.200802914

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