Duke, F.R. & Parchen, F.R. THE KINETICS OF THE Ce(IV)-Ce(III) EXCHANGE REACTION IN PERCHLORIC ACID, report, July 21, 1955; (https://digital.library.unt.edu/ark:/67531/metadc1016412/m1/1/: accessed November 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .