Rampim, L., Lana, M. do C., & Frandoloso, J. F. (2013). Available phosphorus and sulphur, exchangeable aluminum and remaining phosphorus in rhodic eutrudox submitted to gypsum cultivated with wheat and soybean. Semina: Ciências Agrárias, 34(4), 1623–1638. https://doi.org/10.5433/1679-0359.2013v34n4p1623