[1]
A. A. de Souza, H. A. Burity, M. do V. B. Figueiredo, M. L. R. B. da Silva, M. Melotto, and S. M. Tsai, “Symbiotic efficiency of Hup+, Huphr and Hup- Bradyrhizobium japonicum and Bradyrhizobium elkanii strains in cowpea cultivars”, PAB, vol. 34, no. 10, pp. 1925–1931, Oct. 1999, doi: 10.1590/S1678-3921.pab1999.v34.5518.