Mario Zuffo, A., F. Steiner, A. Busch, and T. Zoz. “Response of Early Soybean Cultivars to Nitrogen Fertilization Associated With Bradyrhizobium Japonicum Inoculation”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], vol. 48, no. 4, Dec. 2018, pp. 436-4, https://revistas.ufg.br/pat/article/view/52637.