Beltrán Gutiérrez, L. A., and G. M. Valencia Ramos. “Anatomic Characterization of Growth-Rings in 80 Potential Tree Species for Dendrocronological Studies in the Central Forest, Perú”. Revista De Biología Tropical, vol. 61, no. 3, Sept. 2013, pp. 1025–1037, doi:10.15517/rbt.v61i3.11778.