L. Kudreeva, Z. Kulbayeva, A. Kurbatov, M. Nauryzbayev, and M. Ainamkulova, “The electrochemical reduction of perrhenate ion in non–aqueous dimethylsulfoxide solutions”, Chemical Bulletin of Kazakh National University, vol. 65, no. 1, pp. 94-97, Mar. 2012.