N. M. H. Sá, M. R. M. L. Scotti, M. A. T. Vargas, and J. Dobereiner, “Spontaneous streptomycin resistance and efficiency of <i>Rhizobium</i> strains native in Brazilian cerrados associated with <i>Stylosanthes</i>”;, PAB, vol. 18, no. 3, pp. 213–218, Apr. 2014.