Dangerfield, J.M., Hassall, M. (1994): Shelter site use and secondary sex ratios in the woodlice Armadillidium vulgare and Porcellio scaber (Crustacea: Isopoda). J. Zool., Lond., 233: 1-7.
Dangerfield, J.M., Kauda, S.K. (1994): Millipede (Diplopoda) behaviour in a savanna woodland habitat in south-east Botswana. African Journal of Ecology, 34: 337-341.
Dangerfield, J.M., Milner, A.E., Matthews, R. (1992): Seasonal activity patterns and behaviour of juliform millipedes in south- eastern Botswana. Journal of Tropical Ecology, 8: 451-464.