Bolfe, Édson Luis, and Mateus Batistella. “Floristic and Structural Analysis of Agroforestry Systems in Tomé-Açu, Pará, Brazil”. Pesquisa Agropecuaria Brasileira, vol. 46, no. 10, Jan. 2012, pp. 1139-47, doi:10.1590/S1678-3921.pab2011.v46.8508.