Hopkin, S.P., Martin, M.H., Moss, S.J. (1985): Heavy metals in isopods from the supra-littoral zone on the southern shore of the Severn Estuary, UK. Environmental Pollution (Series B), 9: 239-254.
Hopkin, S.P., Read, H.J. (1992): The Biology of Millipedes. Oxford Science Publications, Oxford.
Hopkin, S.P., Roberts, A.N. (1988): Symphyla – The least studied of the most interesting soil animals. Bulletin of the British Myriapod Group, 5: 28-34.
Hopkin, S.P., Watson, K., Martin, M.H., Mould, M.L. (1985): The assimilation of heavy metals by Lithobius variegatus and Glomeris marginata (Chilopoda, Diplopoda). In: Ellis, W.N., Jeekel, C.A.W., Pieters, F.F.J.M. (Eds.): Proceedings of the 6th International Congress of Myriapodology. Bijdragen tot de Dierkunde, 55: 88-94. (ve sborníku)
