1. Abeygunawardana , P. Smarakoon , S. M. M. 1994 Economics of Upper Catchment Management for Irrigation Development: The Case of Mahaweli Project in Sri Lanka. Proceedings of the first annual general meeting of the Asian Society of Agricultural Economics
2. Economic Evaluation of Watershed Projects: An Overview of Methodology and Application;Brooks;Water Resource Bulletin.,1982
3. Farm Level Economics of Soil Conservation in the Palouse Area of the Northwest;Burt;American Journal of Agricultural Economics.,1981
4. Central Engineering Consultancy Bureau 1978 Mahaweli River Hydrology Report A report submitted to the Ministry of Mahaweli Development, Colombo, Sri Lanka