Ferguson, R.L. & O'Kelley, G.D. A SURVEY AND EVALUATION OF U$sup 233$ FISSION YIELD DATA, report, July 13, 1962; (https://digital.library.unt.edu/ark:/67531/metadc1056944/m1/1/: accessed March 21, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .