Clemente, P. R. A., B. K. L. Bezerra, V. S. G. da Silva, J. C. M. dos Santos, and L. Endres. “Root Growth and Yield of Sugarcane As a Function of Increasing Gypsum Doses”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], vol. 47, no. 1, Apr. 2017, pp. 110-7, https://revistas.ufg.br/pat/article/view/42563.