Williams, E. D. 1968. Preliminary studies of germination and seedling behaviour in Agropyron repens (L.) Beauv. and Agrostis gigantea Roth. British weed control conference. 9, pp. 112-124.
Thurston, J. M. and Williams, E. D. 1968. Growth of perennial grass weeds in relation to the cereal crop. British weed control conference. 9, pp. 1115-1123.
Thurston, J. M. 1964. Weed studies in winter wheat I comparison on bare fallow andherbicides for weed control II The fate of weeds in combine-harvested winter wheat. British weed control conference. 7 (2), pp. 592-598.