Higuchi et. al, "Interaction of Acetic Anhydride with Di- and Tri-carboxylic Acids in Aqueous Solution. II. Acetic Anhydride in Malic, Tartaric, and Succinic Acid Buffers,", 1968

Higuchi et. al, "Interaction of Acetic Anhydride with Di- and Tri-carboxylic Acids in Aqueous Solution. II. Acetic Anhydride in Malic, Tartaric, and Succinic Acid Buffers,", 1968, Box: 10, Folder: 171. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124595 Accessed December 25, 2025.