Higuchi and Kreuter, "Improved Delivery of Methoxsalen,", 1979

Higuchi and Kreuter, "Improved Delivery of Methoxsalen,", 1979, Box: 10, Folder: 161. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124585 Accessed December 25, 2025.