Higuchi and Bolton, "The Solubility and Complexing Properties of Oxytetracycline and Tetracycline III, Interactions in Aqueous Solution With Model Compounds, Biochemicals, Metals, Chelates, and Hexametaphosphate,", 1959, Box: 11, Folder: 99. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124733 Accessed January 02, 2025.