1. Agnihothrudu, V., Soil conditions and wilt disease in plants, rhizosphere microflora in relation to fungal wilt. Ph.D. thesis. Madras Univ. Madras India (1956).
2. Chan, E. C. S. and Katznelson, H., Growth interactions of Arthrobacter globiformis and Pseudomonas sp. in relation to rhizosphere effect. Can. J. Microbiol. 7, 759–767 (1961).
3. Katznelson, H., Nature and importance of rhizosphere. In Ecology of Soil-borne Pathogens, Ed. Kenneth, F. and Baker et al. California Univ. 187–209 (1965).
4. Mall, S. and Saksena, S. B., Antagonistic studies in rhizosphere microflora of potato with special reference to varietal resistance. (Abstract). Proc. Ind. Sci. Congr. (1971).'
5. Rhem, H. I., Beitrag zur Okologie der Streptomyceten. 3. Die Streptomycetenarten und ihre antibiotische Activitat in der Rhizosphare der Gerste. Z. Bakteriol. Parasitenk. Abt. II 114, 147–155 (1961).