Elias, Haroldo Tavares, et al. “Genetic Variability in Traditional Germplasm of Common Black Beans in Santa Catarina State, Brazil”. Pesquisa Agropecuaria Brasileira, vol. 42, no. 10, Oct. 2007, pp. 1443-9, doi:10.1590/S1678-3921.pab2007.v42.7717.