Bolfe, Édson L. and Batistella, M. (2012) “Floristic and structural analysis of agroforestry systems in Tomé-Açu, Pará, Brazil”, Pesquisa Agropecuaria Brasileira, 46(10), pp. 1139–1147. doi: 10.1590/S1678-3921.pab2011.v46.8508.