R. L. Oviedo Burbano, C. Betancourth García, C. Salazar G, and G. Chávez J, “Characterization of causal agent a disturbance in evergreen bean (Phaseolus polyanthus Greenman) in Nariño and Putumayo”, rcia, vol. 27, no. 1, pp. 93–103, Jan. 2010.