Cullen, D. E.; Howerton, R. J.; MacGregor, M. H. & Perkins, S. T. Integrated system for production of neutronics and photonics calculational constants. Supplemental neutron-induced interactions (Z less than or equal to 35): graphical, experimental data, report, July 4, 1976; (https://digital.library.unt.edu/ark:/67531/metadc1408669/m1/1/: accessed June 18, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .