1. Empirically modelling the interaction between intensification and climatic risk in semiarid regions;Affholder;Field Crops Res.,1997
2. Allen, R.G., Pereira, L.S., Raes, D., Smith, M., 1998. Crop evaporation: guidelines for computing crop water requirements. FAO Irrigation and Drainage Paper 56. FAO, Rome, 279 pp.
3. Baron, C., Perez, P., Maraux, F., 1996. Sarrabil: Bilan hydrique à la parcelle analyses comparatives des bilans annuels et pluriannuels analyses des risques climatiques. CIRAD-CA, Montpellier, 32 pp.
4. Barro, A., 1999. Evaluation de l’effet et de la faisabilité du travail du sol sur le sorgho photo-sensible à Saria (Burkina Faso). Thèse ENSAM, Montpellier, 175 pp.
5. Research on nutrient flows and balances in west Africa: state-of-the-art;Bationo;Agric. Ecosyst. Environ.,1998