E.  Andresen and Levey, D. J., ?Effects of dung and seed size on secondary dispersal, seed predation, and seedling establishment of rain forest trees?, Oecologia, vol. 139, pp. 45-54, 2004.

L.  Dormont, Epinat, G., and Lumaret, J. P., ?Trophic preferences mediated by olfactory cues in dung beetles colonizing cattle and horse dung?, Environmental Entomology, vol. 33, pp. 370-377, 2004.