{"id":"sappenfeld1980possible","URL":"https://nsarchive2.gwu.edu/NSAEBB/NSAEBB190/11.pdf","type":"report","title":"Possible Origins of Event 747 Optical Data","author":[{"given":"D. S.","family":"Sappenfeld"},{"given":"D. H.","family":"Sowle"},{"given":"T. H. (Mission Research Corporation)","family":"McCartor"}],"issued":{"date-parts":[[1980]]},"year-text":"1980","container-title":"National Security Archive Electronic Briefing Book 190, Document 11","catalog-key":"SRC0CW4WKFP6R03"}