1. ANON . 1977. Pockmarks puzzle the geologists. Offshore Engineer June 1977, p. 51.
2. ARKELL W. J. 1948. The geology of the Country around Weymouth, Swanage, Corfe and Lulworth. Mem. geol. Surv. U.K. 386 pp.
3. Late Quaternary scour-hollows and related features in central London
4. OLDER AND NEWER DRIFT IN EAST YORKSHIRE
5. BRITISH STANDARD 1377. 1975. Methods of test for soils for civil engineering purposes. British Standards Institution, London. 143 pp.