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\bibitem{Schram_etal2021} {\textquotedblleft}\textit{Local conversion of redox inactive molecules into redox active ones : a formaldehyde based strategy for the electrochemical detection of illicit drugs containing primary and secondary amines}{\textquotedblright}. Schram J, Thiruvottriyur Shanmugam S, Sleegers N, Florea A, Samyn N, van Nuijs ALN, De Wael K, Electrochimica Acta \textbf{367}, 137515 (2021).   http://doi.org/10.1016/J.ELECTACTA.2020.137515

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