Higuchi et. al, "Rational Development of a Soluble Prodrug of a Cytotoxic Nucleoside: Preparation and Properties of Arabinosyladenine 5'-Formate,", 1975, Box: 11, Folder: 82. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124716 Accessed January 02, 2025.