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\bibitem{Faustin_etal2011} Faustin, M., Lebrini, M., Robert, F., \& Roos, C. (2011). Corrosion studies of C38 steel by alkaloids extract of a tropical plant type. \textit{Int.J.Electrochem.Sci.}, \textit{6}(9), 4095--4113.

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