1. FAO-24 reference evapotranspiration factors;Allen;J. Irrigation Drainage Eng.,1991
2. Operational estimates of evapotranspiration;Allen;Agron. J.,1989
3. An update for the definition and calculation of reference evapotranspiration;Allen;ICID Bull.,1994
4. Allen, R.G., Pereira, L.S., Raes, D., Smith, M., 1998. Crop evapotranspiration guide line for computing crop water requirements. FAO Irrigation and Drainage Paper 56.
5. Barragan, J., Wu, I.P., 2000. Efficient water use and water saving by microirrigation. In: Proceeding of the Sixth International Microirrigation Congress, South Africa.