Leal, Jair Rocha, and Ary Carlos X. Velloso. “Desorption of Phosphate in Oxisols Covered by Humid Brushland (<i> savannah< I>). II. The Reversibility of the Phosphate Adsorption Isotherm With Respect to the PH of the Equilibrium Solution”. Pesquisa Agropecuaria Brasileira, vol. 8, no. 7, Apr. 2014, pp. 89-92, doi:10.1590/S1678-3921.pab1973.v8.17413.