Higuchi et. al, "Deuterium Isotope Effects on Degradation of Hydrocortisone in Aqueous Solution,", 1972, Box: 10, Folder: 90. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124514 Accessed June 16, 2024.