Faÿ, Elisabeth de, et al. “Cyanogenesis and the Onset of Tapping Panel Dryness in Rubber Tree”. Pesquisa Agropecuaria Brasileira, vol. 45, no. 12, Mar. 2011, pp. 1372-80, doi:10.1590/S1678-3921.pab2010.v45.8602.