da Silveira, Érico Leandro, et al. “Bacterial Diversity of Soil under Eucalyptus Assessed by 16S RDNA Sequencing Analysis”. Pesquisa Agropecuaria Brasileira, vol. 41, no. 10, Oct. 2006, pp. 1507-16, doi:10.1590/S1678-3921.pab2006.v41.7310.