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\bibitem{Jain_etal2011} {\textquotedblleft}\textit{Voltammetric behaviour of drotaverine hydrochloride in surfactant media and its enhancement determination in Tween-20}{\textquotedblright}. Jain R, Vikas, Rather JA, Colloids and surfaces: B : biointerfaces \textbf{82}, 333 (2011).   http://doi.org/10.1016/J.COLSURFB.2010.09.005

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