Salgado, Fabricio Henrique Moreira, et al. “Efficiency of Common Bean Genotypes in Response to Nitrogen Fertilization”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], vol. 42, no. 4, Oct. 2012, pp. 368-74, https://doi.org/10.5216/pat.v42i4.15413.