1. Bird, M.I. (1997) Fire in the Earth Sciences, Episodes, v.20, pp.223–226.
2. Bustin, R.M. and Guo, Y. (1999) Abrupt changes. Internat. Jour. Coal Geol., pp.237–260.
3. Clark, F.R.S. and Russell, D.A. (1981) Fossil charcoal and the palaeoatmosphere. Nature, v.290, pp.428.
4. Cohen, A.D. (1974) Evidence of fires in the ancient Everglades and coastal swamps of Southern Florida. Environments of South Florida, Present and Past: Miami Geol. Soc. Mem., pp.213–218.
5. Cohen, A.D., Raymond, J., Archuleta, L.M. and Mann, D.A. (1987) Preliminary study of the reflectance of huminite macerals in recent surface peats. Organic Geochemistry, pp.429–430.