Pérez Polo, Dairo Javier, and Rodrigo Orlando Campo Arana. 2016. “Effect of population density on the yield of export-type white yams (Dioscorea rotundata Poir.)”. Revista Colombiana de Ciencias Hortícolas 10 (1):89-98. https://doi.org/10.17584/rcch.2016v10i1.5072.