U.S. Government UFO Document (FOIA):
“Unidentified Flying Objects (UFO) In Ancient China”
(JPRS-CIA-90-001, 18 January 1990)
(Central Intelligence Agency, Washington, D.C.)
The article by A. D. Dikaryov focuses on the UFO research work of Chinese scientists:
http://www.foia.cia.gov/docs/DOC_0000042351/DOC_0000042351.pdf
JPRS is the acronym for the defence funded Joint Publications Research Service (now absorbed into the Foreign Broadcast Information Service).
Wikipedia article: “Joint Publications Research Service”:
http://en.wikipedia.org/wiki/Joint_Publications_Research_Service
(wikimedia.org image)