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Atkins H, Dassa E, Walker N, Griffin K, Harland D, Taylor R, Duffield M, Titball R. The identification and evaluation of ATP binding cassette systems in the intracellular bacterium Francisella tularensis. Res Microbiol. 2006, 157 (6): 593–604. PMID 16503121. doi:10.1016/j.resmic.2005.12.004.
Croddy, Eric C. and Hart, C. Perez-Armendariz J., Chemical and Biological Warfare, (Google Books (页面存档备份,存于互联网档案馆)), Springer, 2002, pp. 30–31, (ISBN0387950761), accessed October 24, 2008.