1 ICID. 1996. 16th Congress on Irrigation and Drainage, Cairo, Egypt, 1996: Sustainability of Irrigated Agriculture - Transactions, Vol.1C, Q.47: Irrigation planning and management: Measures in harmony with the environment. New Delhi, India: ICID. xii, 340p.
2 Kool, J. P. 1996. Optimization strategy to protect quality of water resources in agricultural areas. In ICID, 16th Congress on Irrigation and Drainage, Cairo, Egypt, 1996: Sustainability of Irrigated Agriculture - Transactions, Vol.1C, Q.47: R.3.03 Irrigation planning and management: Measures in harmony with the environment. New Delhi, India: ICID. pp.219-233.