1978.10.21, National Archives, Valentich Missing Aircraft UFO Visual, DSJ, Cape Otway to King Island FOIA B1497-V116,783,1047
1978.10.21, National Archives, Valentich Missing Aircraft UFO Visual, VH-DSJ Light Aircraft Overdue, King Island Series A4703
1967, Air Command and Staff College, Thesis, An Analysis of Unidentified Flying Objects (UFOs) - Ronald K. Dutton
Is the Subject of UFOs Worth Serious Study?
1971, Auburn Univ., Dissertation, The UFO Debate is Still Active - Jerry D. Stroh