Pérez Polo, D. J. and Campo Arana, R. O. (2016) “Effect of population density on the yield of export-type white yams (Dioscorea rotundata Poir.)”, Revista Colombiana de Ciencias Hortícolas, 10(1), pp. 89–98. doi: 10.17584/rcch.2016v10i1.5072.