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\bibitem{Satyawali_etal2013} {\textquotedblleft}\textit{Characterization and analysis of the adsorption immobilization mechanism of \beta-galactosidase on metal oxide powders}{\textquotedblright}. Satyawali Y, Van Roy S, Roevens A, Meynen V, Mullens S, Jochems P, Doyen W, Cauwenberghs L, Dejonghe W, RSC advances \textbf{3}, 24054 (2013).   http://doi.org/10.1039/C3RA45107K

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