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harvard.edu
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Schaefer, William P.; Fourkas, John T.; Tiemann, Bruce G. (April 1985). "Structure of hexamethylene triperoxide diamine". Journal of the American Chemical Society. 107 (8): 2461–2463. Bibcode:1985JAChS.107.2461S. doi:10.1021/ja00294a043.
nefafoundation.org
U.S. Court of Appeals for the Ninth Circuit (2 February 2010). "U.S. v. Ressam"(PDF). Archived from the original(PDF) on 4 October 2012. Retrieved 27 February 2010.
U.S. Court of Appeals for the Ninth Circuit (2 February 2010). "U.S. v. Ressam"(PDF). Archived from the original(PDF) on 4 October 2012. Retrieved 27 February 2010.