References

/1/                    Allen, R.G., Pereira, L.S., Raes, D. and Smith, M., 1998. Guidelines for computing crop water requirements. FAO Irrig and Drainage Paper No. 56, FAO, Rome, Italy.

/2/                    USDA, 1985. National Engineering Handbook, Section 4, Hydrol­ogy. United States Department of Agriculture (USDA), Soil Conser­vation Service, Washington DC, USA