Higuchi et. al, "The Intramolecular Facilitated Hydrolytic Rates of Methyl-Substituted Succinanilic Acids,", 1966

Higuchi et. al, "The Intramolecular Facilitated Hydrolytic Rates of Methyl-Substituted Succinanilic Acids,", 1966, Box: 10, Folder: 177. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124601 Accessed February 15, 2026.