Trzeciak, M.J. & Mallett, M.W. STUDIES RELATING TO HYDROGEN IN DINGOT URANIUM, report, September 20, 1957; (https://digital.library.unt.edu/ark:/67531/metadc872667/m1/1/: accessed February 22, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .