Molano-Avellaneda, Zulma, et al. “Progress in the study of cholupa (Passiflora maliformis L.) phenology in producing areas of Colombia”. Revista Colombiana de Ciencias Hortícolas, vol. 14, no. 1, Oct. 2020, pp. 32-43, doi:10.17584/rcch.2020v14i1.11251.