Araújo, Fábio Fernando de, and Mariangela Hungria. 1999. “Soybean Nodulation and Yield When Co-Inoculated With <i>Bacillus subtilis< i> and <i>Bradyrhizobium Japonicum Bradyrhizobium elkanii< I>”;. Pesquisa Agropecuaria Brasileira 34 (9):1633-43. https://doi.org/10.1590/S1678-3921.pab1999.v34.5420.