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\bibitem{Terzano_etal2007} {\textquotedblleft}\textit{Microscopic single particle characterization of zeolites synthesized in a soil polluted by copper or cadmium and treated with coal fly ash}{\textquotedblright}. Terzano R, Spagnuolo M, Medici L, Dorrin{\'e} W, Janssens K, Ruggiero P, Applied clay science \textbf{35}, 128 (2007).   http://doi.org/10.1016/J.CLAY.2006.07.005

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