Figueiredo, M. do V. B. (1992) “Survival of <i>Bradyrhizobium</i> SP. in alternative legume inoculant carriers”, Pesquisa Agropecuaria Brasileira, 27(11), pp. 1497–1506. doi: 10.1590/S1678-3921.pab1992.v27.3796.