Betancourth-García, Carlos A., et al. “Morphology and Pathogenicity of Rhizoctonia Solani Kühn Associated With Potato Black Scurf in Nariño (Colombia)”. Revista Colombiana De Ciencias Hortícolas, vol. 15, no. 1, Jan. 2021, p. e11821, doi:10.17584/rcch.2021v15i1.11821.