Huong, D.G. and Dung, N.L. 2006. Study on the indole acetic acid bio-production ability of the bacterium strain Rhizobium sp. 3.4. Academia Journal of Biology. 28, 1 (Mar. 2006), 92–95. DOI:https://doi.org/10.15625/0866-7160/v28n1.838.