Melo, Leonidas Carrijo Azevedo, et al. “MAIZE NUTRITION AND DRY MATTER YIELD UNDER LIMING AND SULFUR FERTILIZATION”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], vol. 41, no. 2, May 2011, pp. 193-9, https://doi.org/10.5216/pat.v41i2.8685.