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\bibitem{Ahenach_etal1999} {\textquotedblleft}\textit{Influence of water on the pillaring of montmorillonite with aminopropyltriethoxysilane}{\textquotedblright}. Ahenach J, Cool P, Vansant EF, Lebedev O, van Landuyt J, Physical chemistry, chemical physics \textbf{1}, 3703 (1999).   http://doi.org/10.1039/a901888c

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