Maneschy, Rosana Quaresma, et al. “Economical Viability of Silvopastoral Systems With Schizolobium Parahyba Var. Amazonicum Barneby and Tectona Grandis in Para, Brazil”. Pesquisa Florestal Brasileira, no. 60, Feb. 2010, p. 49, https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/45.