S. WANG, X. HONG WU, and Z. HUA JIANG, “Synthesis of cis-Dithiocyanato bis(4,4´-Dicarboxylic acid-2,2´-bipyridine)ruthenium and its Application in Dye-Senstized Solar Cells”, ajc, vol. 20, no. 5, pp. 3438–3446, Mar. 2010.