Moreno, M, et al. “Characterization ‘In situ’ of Wild and Cultivated Genotypes of Blackberry Rubus Spp in Pasto Municipality”. Revista De Ciencias Agrícolas, vol. 28, no. 2, July 2011, pp. 109-28, https://revistas.udenar.edu.co/index.php/rfacia/article/view/19.