Tsegaye, Zerihun, et al. “Isolation and Biochemical Characterization of Plant Growth Promoting (PGP) Bacteria Colonizing the Rhizosphere of Tef Crop During the Seedling Stage”. Journal of Plant Science and Phytopathology, vol. 3, no. 1, Mar. 2019, pp. 013-27, doi:10.29328/journal.jpsp.1001027.