Mcpeak, J. G. 1999. Herd growth on shared rangeland: herd management and land-use decisions in Northern Kenya.PhD thesis in agricultural and applied economics. University of Wisconsin.
Duraimurugan P et al., 'Field evaluation of synthetic kairomonal attractants against major lepidopteran pests of castor', ournal of Experimental Biology, vol. 38, 1421-1427, Triveni Enterprises, 2018
Neethling, Marcha, 'Santé : Un texto peut en cacher un autre', ICT Update, vol. 48, Technical Centre for Agricultural and Rural Cooperation, Wageningen, 2009
Sibiry Traoré, Pierre C., 'Services au paysan : Vu du ciel', ICT Update, vol. 53, Technical Centre for Agricultural and Rural Cooperation, Wageningen, 2010