Cruz, Maria Fernanda Antunes, et al. “Silicon on the Infection Process of Phakopsora Pachyrhizi on Soybean Leaflets”. Pesquisa Agropecuaria Brasileira, vol. 47, no. 1, Mar. 2012, pp. 142-5, https://doi.org/10.1590/S1678-3921.pab2012.v47.11501.