Bacillus anthracis, Bacillus cereus, and Bacillus thuringiensis – one species on the basis of genetic evidence. - Helgason,E.; Okstad,O.A.; Caugant,D.A.; Johansen,H.A.; Fouet,A.; Mock,M.; Hegna,I.; Kolstø,A.B. (Appl Environ Microbiol, 2000)