Higuchi et. al, "Rate Studies on the Anaerobic Degradation of Ascorbic Acid IV, Catalytic Effect of Metal Ions,", 1966, Box: 11, Folder: 79. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124713 Accessed January 02, 2025.