Lacava, Paulo Teixeira, et al. “Detection of Siderophores in Endophytic Bacteria Methylobacterium Spp. Associated With Xylella Fastidiosa Subsp. Pauca”. Pesquisa Agropecuaria Brasileira, vol. 43, no. 4, Oct. 2008, pp. 521-8, https://doi.org/10.1590/S1678-3921.pab2008.v43.282.