"Role of plasma catecholamines in eliciting cardiovascular changes seen during naloxone - precipitated withdrawal in conscious, unrestrained morphine-dependent rats" - Andi Piang-Ling Chang and Walter R. Dixon, Box: 20, Folder: 9. Personal Papers of Walter R. Dixon, PP 401. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/255646 Accessed October 05, 2024.