Carneiro, Cristine Elizabeth Alvarenga, et al. “Chemical Alterations in the Soil Induced by the Superficial Application of Straw of Sugar-Cane, Limestone and Vinasse”. Semina: Ciências Agrárias, vol. 25, no. 4, May 2004, pp. 265-72, doi:10.5433/1679-0359.2004v25n4p265.