Raposeiras, R. et al. 2006. <i>Rhizobium strains</i> competitiveness on bean nodulation in Cerrado soils. Pesquisa Agropecuaria Brasileira. 41, 3 (Mar. 2006), 439–447. DOI:https://doi.org/10.1590/S1678-3921.pab2006.v41.7157.