Y.  Cambefort, ?Chapter 9. Dung beetles in tropical savannas?, in Dung beetle ecology, I.  Hanski and Cambefort, Y., Eds. Princeton: Princeton University Press, 1991, pp. 156-178.

B. M.  Doube, ?Dung beetles of southern Africa?, in Dung Beetle Ecology, I.  Hanski and Cambefort, Y., Eds. Princeton: Princeton University Press, 1991, pp. 133-155.

I.  Hanski, ?Nutritional ecology of dung and carrion feeding insects?, in Nutritional Ecology of Insects, Mites and Spiders, J. F.  Slanky and Rodriguez, J. G., Eds. New York: Wiley, 1987, pp. 837-884.

I.  Hanski and Cambefort, Y., ?Chapter 18. Resource partitioning?, in Dung beetle ecology, I.  Hanski and Cambefort, Y., Eds. Princeton: Princeton University Press, 1991, pp. 330-349.