1. Bassett, S. R. (1982) Saffivn Walden: excavations and research 1972-80, CBA Research Report 45, London.
2. Brown, T. and Foard, G. (1998) ‘The Saxon landscape: a regional perspective’, in The Archaeology of Landscape: studies presented to Christopher Taylor, eds P. Everson and T. Williamson, Manchester University Press, Manchester, 67-94.
3. Bryant, S., Perry, B. and Williamson, T. (2005) in press, ‘A “relict landscape” in south east Hertfordshire: archaeological and topographic investigations in the Worrnley area’, Landscape History.
4. Cushion, B. and Davison, A. D. (2003) Earthworks of Nmfolk (published as East Anglian Archaeology 104)