{{Cite journal| issn = 0022-0728| volume = 75| issue = 2| pages = 579–593| last1 = Rauwel| first1 = F.| last2 = Thevenot| first2 = D.| title = Use Of Ring-Disc Electrodes And Viologens For Titration Of Cytochrome-C And Oxygen And For Study Of Their Reduction Kinetics| journal = Journal of Electroanalytical Chemistry| date = 1977}}