Marinho, R. de C. N. (2014) “Field performance of new cowpea cultivars inoculated with efficient nitrogen‑fixing rhizobial strains in the Brazilian Semiarid”, Pesquisa Agropecuaria Brasileira, 49(5), pp. 395–402. doi: 10.1590/S1678-3921.pab2014.v49.18942.