Higuchi and Gensch, "Oxidation of Thioethers by Iodine to Sulfoxides. Catalytic Role of Certain Inorganic Nucleophiles,", 1966, Box: 11, Folder: 26. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124660 Accessed June 02, 2024.