P. Madl - Chronological correspondence, 1979 July - December 1980, 21/0/1/1, Box: 21/0/1/1. Records of the University of Kansas' School of Engineering, RG 21. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/518946 Accessed May 18, 2024.