1. Benson, D. A., I. Karsch-Mizrachi, D. J. Lipman, J. Ostell, and D. L. Wheeler. 2005. GenBank. Nucleic Acids Res.33:D34-D38.
2. Breznak, J. A. 2000. Ecology of prokaryotic microbes in the guts of wood- and litter-feeding termites, p. 209-232. In T. Abe, D. E. Bignell, and M. Higashi (ed.), Termites: evolution, sociality, symbioses, ecology. Kluwer, Dordrecht, The Netherlands.
3. Breznak, J. A., and A. Brune. 1994. Role of microorganisms in the digestion of lignocellulose. Annu. Rev. Entomol.39:453-487.
4. The prokaryotes: an online electronic resource for the microbiological community 2005
5. Endosymbiosis of animals with plant microorganisms. 1965