Barrantes Madrigal, Katherine, et al. “Relation of Chlorophyll and Foliar Nitrogen of Gmelina Arborea Roxb. At the Nursery and in the Field”. Revista Mexicana de Ciencias Forestales, vol. 9, no. 46, Mar. 2018, https://doi.org/10.29298/rmcf.v9i46.124.