Contained ring vortices (spherical vibration of gaseous molecules by ring vortices and tubefoil experiments), 1977 and 1979. [edited typescripts with drawings], Box: 10, Folder: 2. Russell Randolph Hays papers, RH MS 564. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/278261 Accessed November 23, 2024.