A. M. Knupp, E. P. de B. Ferreira, and A. P. Araújo, “Variability of nodulation traits in Andean and Mesoamerican common bean gene pools”, PAB, vol. 52, no. 4, pp. 252–260, May 2017, doi: 10.1590/S1678-3921.pab2017.v52.24558.