17. "The effects of morphine on norepinephrine-stimulated phosphatidylinositol response in rat cerebral cortex" by Walter R. Dixon, Yee-Way Ting and Andi P. L. Chang, Box: 17, Folder: 18. Personal Papers of Walter R. Dixon, PP 401. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/255561 Accessed January 28, 2025.