International Union of Pure and Applied Chemistry (IUPAC) Commission on Nomenclature of Inorganic Chemistry (CNIC), 1985, Box: 29, Folder: 5. Personal papers of Daryle H. Busch, PP 637. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/512074 Accessed March 13, 2025.