Available here.
This Policy Brief is based on the studies:
You, L et al. (2011) What is the irrigation potential for Africa? A combined biophysical and socioeconomic approach, Food Policy 36(6): 770-782.
Xie, H et al. (2014) Estimating the potential for expanding smallholder irrigation in Sub-Saharan Africa, Agricultural Water Management 131: 183-193.