1. Saffron cultivation in Morocco;Aitoubahou,1999
2. Azizi-Zohan, A.A., Kamgar-Haghighi, A.A., Sepaskhah, A.R., 2004. Investigation on water requirement, irrigation method and frequency of saffron (Crocus sativus L.). Proceedings, AgEng 2004, Sept. Leuven, Belgium, pp. 12–16.
3. Allen, R.G., Pereira, L.S., Raes, D., Smith, M., 1998. Crop Evapotranspiration. Food and Agricultural Organization of the United Nations. Pub. no. 56.
4. Doorenbos, J., Pruitt, W.O., 1977. Crop Water Requirements. Food and Agricultural Organization of the United Nations. Pub. no. 24.
5. The role of automated weather networks in providing evapotranspiration estimates;Elliott,2000