Castro, A. 2009. Determination of the dynamics of nitrogen and phosphorus in the experimental plots in Honduras. PhD thesis. Nicaragua: University of Agriculture Nicaragua.
Belete, S. 2018. Effects of phosphorus fertilizer and inoculation on yield and nutritive values of grain and haulm of selected grain legumes in mixed crop-livestock production system of Ethiopia. MSc thesis in Animal and Range Sciences (Specialization: Animal Nutrition). Hawassa, Ethiopia: Hawassa University.
Gakuru, Mucemi, 'Services au paysan : Intégrer les systèmes d'info', ICT Update, vol. 53, Technical Centre for Agricultural and Rural Cooperation, Wageningen, 2010
Seck, Tidiane, 'Finding the right balance [ICTs for agriculture]', ICT Update, vol. 50, Technical Centre for Agricultural and Rural Cooperation, Wageningen, 2009