Fernandes, M.F. et al. 2003. Genetic characterization of indigenous rhizobia strains from the coastal tableland efficient for the pigeonpea and cowpea crops. Pesquisa Agropecuaria Brasileira. 38, 8 (Aug. 2003), 911–920. DOI:https://doi.org/10.1590/S1678-3921.pab2003.v38.6654.