Conceição, Mauro da, et al. “Selection of Rhizobium Leguminosarum Strains for the Inoculation of Peas on the Rio De Janeiro Hill Farms”. Pesquisa Agropecuaria Brasileira, vol. 16, no. 4, Apr. 2014, pp. 477-82, doi:10.1590/S1678-3921.pab1981.v16.16976.