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WikiPedia: Sự_kiện_UFO_Tehran_1976 http://www.dia.mil/FOIA/FOIA-Electronic-Reading-Ro... http://nicap.org/reports/760919routing_slip_ufo_ir... http://www.nicap.org/tehran1.htm http://www.ufosightingstoday.org/1976-tehran-ufo-i... https://www.heraldtribune.com/article/LK/20090211/... https://www.newyorker.com/magazine/2021/05/10/how-... https://skeptoid.com/episodes/4315 https://www.theguardian.com/world/shortcuts/2013/j... https://www.nsa.gov/Portals/70/documents/news-feat... https://web.archive.org/web/20060206175522/http://...