5. "Effect of intraventricular administration of catechol estrogens on catecholamine content in various brain regions" by Diana Ungerman Panek and Walter R. Dixon

5. "Effect of intraventricular administration of catechol estrogens on catecholamine content in various brain regions" by Diana Ungerman Panek and Walter R. Dixon, Box: 17, Folder: 6. Personal Papers of Walter R. Dixon, PP 401. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/255549 Accessed December 25, 2025.