I.  Hanski, ?Dung insect community?, in Dung beetle ecology, I.  Hanski and Cambefort, Y., Eds. Princeton, Jersey: Princeton University Press, 1991, pp. 5-21.

I.  Hanski and Cambefort, Y., ?Species richness?, in Dung beetle ecology, I.  Hanski and Cambefort, Y., Eds. Princeton, Jersey: Princeton, 1991, pp. 350-365.