"The effect of etorphine on the secretion of endogenous catecholamines and total tritium evoked by nerve - and acetylcholine - stimulation in perfused rat adrenal glands" - Yu-Mai Chen, Walter R. Dixon, Arun R. Wakade, Box: 20, Folder: 17. Personal Papers of Walter R. Dixon, PP 401. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/255653 Accessed October 05, 2024.