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\bibitem{Jochems_etal2011} {\textquotedblleft}\textit{Characterization and optimization of \beta-galactosidase immobilization process on a mixed-matrix membrane}{\textquotedblright}. Jochems P, Satyawali Y, van Roy S, Doyen W, Diels L, Dejonghe W, Enzyme and microbial technology \textbf{49}, 580 (2011).   http://doi.org/10.1016/J.ENZMICTEC.2011.06.010

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