Higuchi et. al, "Carbonation of Aqueous Solutions with Acid Anhydrides. Slow Acidification in Homogenous Systems,", 1965

Higuchi et. al, "Carbonation of Aqueous Solutions with Acid Anhydrides. Slow Acidification in Homogenous Systems,", 1965, Box: 10, Folder: 57. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124481 Accessed December 25, 2025.