“Charcoal consumption and casting activity by Pontoscolex corethrurus (Glossoscolecidae) ”, Applied Soil Ecology, vol. 28, pp. 217-224 , 2005.
, “Burrowing activity of the geophagous earthworm Pontoscolex corethrurus (Oligochaeta: Glossoscolecidae) in the presence of charcoal”, Agriculture,ecosystems & environment. Applied soil ecology, vol. 23 , p. 5, 2003.
,