13. "Effect of etorphine on adrenergic neurotransmission in the rat and guinea pig heart" by Wasswa E.B. Semafuko, Daniel L. Follett, Walter R. Dixon

13. "Effect of etorphine on adrenergic neurotransmission in the rat and guinea pig heart" by Wasswa E.B. Semafuko, Daniel L. Follett, Walter R. Dixon, Box: 17, Folder: 14. Personal Papers of Walter R. Dixon, PP 401. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/255557 Accessed December 25, 2025.