Rose, J., Study, R. G., Allen, P. and Whiteman, C. A. 1978. Middle Pleistocene sediments and palaeosols near Chelmsford, Essex: Field meeting report: 7 November, 1976. Proceedings of the Geologists' Association. 89 (1), pp. 91-96. https://doi.org//10.1016/S0016-7878(78)80024-8
Thomasson, A. J. 1961. Some aspects of the drift deposits and geomorphology of south-east Hertfordshire. Proceedings of the Geologists' Association. 72 (3), pp. 287-302. https://doi.org/10.1016/S0016-7878(61)80016-3
Ollier, C. D. and Thomasson, A .J. 1956. Slumping in Reading Beds near St. Leonards, Bucks. Proceedings of the Geologists' Association. 67 (3/4), pp. 228-231, IN3. https://doi.org/10.1016/S0016-7878(56)80024-2