Coelho, Selma Regina de Freitas, et al. “Growth, Nutrition and Biological Fixation of Nitrogen in Mixed-Species Plantations of Eucalypt With Leguminous Trees”. Pesquisa Agropecuaria Brasileira, vol. 42, no. 6, June 2007, pp. 759-68, doi:10.1590/S1678-3921.pab2007.v42.7628.