Higuchi et. al, "Polymorphism and Drug Availability, Solubility Relationships in the Methylprednisolone System,", 1962, Box: 11, Folder: 55. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124689 Accessed January 02, 2025.