Salm, Rodolfo. 2004. “Stem Density and Growth of Attalea Maripa and Astrocaryum Aculeatum: Implication for Arborescent Palms Distribution across Amazonian Forests”. Biota Neotropica 4 (1). Sao Paulo, Brazil. //www.biotaneotropica.org.br/BN/article/view/1109.