Perin, Liamara, et al. “Diversity of <i>Gluconacetobacter diazotrophicus< i> Isolated from Sugarcane Plants Cultivated in Brazil”. Pesquisa Agropecuaria Brasileira, vol. 39, no. 8, Aug. 2004, pp. 763-70, doi:10.1590/S1678-3921.pab2004.v39.6836.