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Sørensen, Jan; Jensen, Linda E.; Nybroe, Ole (2001). "Soil and rhizosphere as habitats for Pseudomonas inoculants: New knowledge on distribution, activity and physiological state derived from micro-scale and single-cell studies". Plant and Soil. 232 (1–2): 97–108. doi:10.1007/978-94-010-0566-1_10.
Glick, Bernard R. (1995). "The enhancement of plant growth by free-living bacteria". Canadian Journal of Microbiology. 41 (2): 109–117. doi:10.1139/m95-015. ISSN0008-4166.
Kloepper, Joseph W.; Schroth, Milton N. (1978). "Plant growth-promoting rhizobacteria on radishes"(PDF). Proceedings of the 4th International Conference on Plant Pathogenic Bacteria. 2. Angers, France: Station de Pathologie Végétale et Phytobactériologie, INRA: 879–882. Archived from the original(PDF) on 2014-07-14.
Glick, Bernard R. (1995). "The enhancement of plant growth by free-living bacteria". Canadian Journal of Microbiology. 41 (2): 109–117. doi:10.1139/m95-015. ISSN0008-4166.