C. G. Roque, R. de M. Prado, W. Natale, A. N. Beutler, and J. F. Centurion, “Nutritional status and productivity of rubber tree on soil with surface applied lime”, PAB, vol. 39, no. 5, pp. 485–490, May 2004, doi: 10.1590/S1678-3921.pab2004.v39.6797.