1. Anderson, J.A.R., 1983. The tropical swamps of western Malesia. In: Gore, A.J.P. (Ed.), Ecosystems of the World, Vol. 4B-Mires, Swamp, Bog, Fen and Moor. Elsevier, Amsterdam, pp. 181–198.
2. Babel, U., 1975. Micromorphology of soil organic matter. In: Gieseking, J.E. (Ed.), Soil Components, Vol. 1, Organic Components. Springer-Verlag, New York, pp. 369–474.
3. The Karoo Basin of south Africa: type basin for the coal-bearing deposits of southern Africa;Cadle;Int. J. Coal Geol.,1993
4. The geology, botany and chemistry of selected peat-forming environments from temperate and tropical latitudes;Cameron;Int. J. Coal Geol.,1989
5. Chagué, C., 1994. Geochemistry and organic petrology of boreal and subarctic peats in Canada. University of Western Ontario, PhD thesis, unpublished.