1. Groundwater – a threatened resource;Clarke;UNEP Environment Library,1995
2. Groundwater quality in Asia: An overview of trends and concerns;Foster;UN-ESCAP Water Res. J: Series C,1995
3. Groundwater in urban development – assessing management needs and formulating policy strategies;Foster;World Bank Technical Paper,1998
4. Foster, S. S. D., Morris, B. L., Lawrence, A. R., & Chilton, P. J. (1999). Groundwater impacts and issues in developing cities – an introductory review. In Proceedings of the IAH XXVII congress `groundwater in the urban environment' (Nottingham/September 1999) II/IAH international contributions of hydrogeology (Vol. 21, pp. 3–18)
5. Morris, B. L., Lawrence, A. R., & Foster, S. S. D. (1997). Sustained groundwater management for fast-growing cities: Mission achievable or mission impossible? In Proceedings of the IAH XXVII congress `groundwater in the urban environment' (Nottingham/September 1997) (Vol. I, pp. 55–66)