Higuchi et. al, "Acetylacroninium Salts as Soluble Prodrugs of the Antineoplastic Agent Acronine,", 1977

Higuchi et. al, "Acetylacroninium Salts as Soluble Prodrugs of the Antineoplastic Agent Acronine,", 1977, Box: 10, Folder: 29. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124453 Accessed December 25, 2025.