Gonçalves, Paulo de Souza, et al. “Promising Hevea Clones for Ribeira River Valley Region, São Paulo State, Brazil”. Pesquisa Agropecuaria Brasileira, vol. 35, no. 12, Dec. 2000, pp. 2343-5, https://doi.org/10.1590/S1678-3921.pab2000.v35.6030.