1. Alexander, M., Wilson, P. W. 1956 Intracellular distribution of tricarbocylic acid cycle enzymes in Azotobacter vinelandii Journal of Bacteriology 71 252–253
2. Antheunisse, J. 1972 Preservation of microorganisms Antonie van Leeuwenhoek Journal of Microbiology and Serology 38 617–622
3. Antheunisse, J. 1973 Viability of lyophilized microorganisms after storage Antonie van Leeuwenhoek Journal of Microbiology and Serology 39 243–248
4. Azad, M. I., Aslam, M. 1985 Studies on the effect of Azotobacter chroococcum on the yield of potato (Solanum tuberosum L.) 395–398 K. A., Malik, S. H. M., Naqvi, and M. I. H., Aleem (ed.) Nitrogen and the environment. Proc. International Symposium Nuclear Institute for Agriculture and Biology Faisalabad Pakistan
5. Bagyaraj, D. J., Menge, J. A. 1978 Interaction between a VA mycorrhiza and Azotobacter and their effects on rhizosphere microflora and plant growth New Phytologist 80 567–573