Eraso J., Claudia, et al. “Evaluation of Two Types of Seedling in Broccoli (Brassica olerácea L.), in Three Localities of the Muniotality of Pasto”. Revista De Ciencias Agrícolas, vol. 28, no. 2, July 2011, pp. 31-42, https://revistas.udenar.edu.co/index.php/rfacia/article/view/12.