Pkania , Kennedy Chepkurui, et al. “ Diversity Studies of Xanthomonas Citri Pv. Malvacearum Strains Isolated from Cotton in Western Kenya Based on Rep PCR Analysis ”. African Journal of Education,Science and Technology (AJEST), vol. 1, no. 4, July 2014, pp. pp 142-149, http://ajest.org/index.php/ajest/article/view/378.