1. Asian Institute of Technology (AIT): 1981,Investigation of Land Subsidence Caused by Deep Well Pumping in the Bangkok Area, Comprehensive Report 1978?1981, Submitted to the Office of the National Environment Board, Bangkok, Thailand.
2. Asian Institute of Technology (AIT) and Department of Mineral Resources (DMR): 1982,Groundwater Resources in the Bangkok Area: Development and Management Study, Comprehensive Report 1978?1982, Submitted to the Office of the National Environment Board, Bangkok, Thailand.
3. Asian Institute of Technology (AIT): 1987,Extended Simulation Study of Bangkok Aquifer System, Research Report No. 193, submitted to the Department of Mineral Resources (DMR), Ministry of Industry, Royal Thai Government.
4. Asian Institute af Technology (AIT): 1992,Simulation Study of Bangkok Aquifer System (1991), Research Report No. 251, submitted to the Department of Mineral Resources (DMR), Ministry of Industry, Royal Thai Government.
5. Bredehoeft, J. D. and Pinder, G. F.: (1970), Digital Analysis of Areal Flow in Multi Aquifer Groundwater Systems: A Quasi Three Dimensional Model,Water Resour Res. 6, 883?888.