Released Heavily Excised by CIA
https://www.cia.gov/library/readingroom/document/terrorism-review-deleted-7
https://www.cia.gov/library/readingroom/docs/DOC_0000196490.pdf
Discovered on dnsa site
and published Monday 15.07.2013 here :
http://tueriesdubrabant.winnerbb.com/t2582p833-vague-d-attentats-au-luxembourg archive
Re-released 2016 with Additions / Substractions :
https://www.cia.gov/library/readingroom/document/cia-rdp87t00685r000200320002-1
https://www.cia.gov/library/readingroom/docs/CIA-RDP87T00685R000200320002-1.pdf
1985 : http://dtic.mil/whs/directives/corres/pdf/522022r.pdf
See : https://www.justice.gov/open/declassification/declassification-faq archive