8. "Effects of ouabain on the nerve stimulation-evoked release of norepinephrine from isolated perfused guinea-pig-heart" by Robert L. Panke, Ronald R. Gaddis and Walter R. Dixon, Box: 17, 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/255552 Accessed June 03, 2024.