Gerald: An Exceptional Lazy Functional Programming Language. - A. C. Reeves; D. A. Harrsion; A. F. Sinclair; P. Williamson (Functional Programming, 1989)

Exploring the utility of grids for analysing long term population change. - Christopher D. Lloyd; Gemma Catney; P. Williamson; N. Bearman (Comput. Environ. Urban Syst., 2017)