Nawangsih, Abdjad Asih, et al. “SELECTION AND CHARACTERIZATION OF SIDEROPHORE-PRODUCING RHIZOBACTERIA AND POTENTIAL ANTAGONISTIC ACTIVITY TOWARD Ralstonia Solanacearum”. BIOTROPIA, vol. 24, no. 2, Aug. 2017, pp. 85-93, doi:10.11598/btb.2017.24.2.406.