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\bibitem{DeWael_etal2012} {\textquotedblleft}\textit{Enzyme-gelatin electrochemical biosensors : scaling down}{\textquotedblright}. De Wael K, De Belder S, Pilehar S, Van Steenberge G, Herrebout W, Heering HA, Biosensors \textbf{2}, 101 (2012).   http://doi.org/10.3390/BIOS2010101

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