R.J.O. Hamblin, B.S.P. Moorlock, J.R. Lee, J.B. Riding, and S.J. Booth. “Revised Pre-Devensian Glacial Stratigraphy in Norfolk, England, Based on Mapping and till Provenance”. Netherlands Journal of Geosciences, vol. 84, July 2005, pp. 77 -85, doi:10.1017/S0016774600022976.