Knupp, Adriano Moreira, Enderson Petrônio de Brito Ferreira, and Adelson Paulo Araújo. 2017. “Variability of Nodulation Traits in Andean and Mesoamerican Common Bean Gene Pools”. Pesquisa Agropecuaria Brasileira 52 (4):252-60. https://doi.org/10.1590/S1678-3921.pab2017.v52.24558.