Radwan, Tharwat El-Sayed El-Desouk, et al. “Aeration and Salt Effects on Indol Acetic Production by Diazotrophic Bacteria”. Pesquisa Agropecuaria Brasileira, vol. 40, no. 10, Oct. 2005, pp. 997-1004, doi:10.1590/S1678-3921.pab2005.v40.7056.