Holmstrup, M., Jensen, K. S., Kirknel, E., Sheppard, S. (red.), Bembridge, J. (red.), Holmstrup, M. (red.) & Posthuma, L. (red.) (1998).
Estimation of Effects of Benomyl Application on the Reproductive Rate of Earthworms in a Grass Field. I S. Sheppard, J. Bembridge, M. Holmstrup & L. Posthuma (red.),
Advances in Earthworm Ecotoxicology: Proceedings of the Second International Workshop on Earthworm Ecotoxicology, Amsterdam, The Netherlands, April 1997 (s. 353-364). Pensacola, FL: Society of Environmental Toxicology and Chemistry (SETAC).