E. S. Silva, C. de S. Mathias, M. C. F. de Lima, V. F. da Veiga Junior, D. P. Rodrigues, and C. R. Clement, “Physico‑chemical analysis of the oleoresin and genetic variability of copaiba in the Tapajós National Forest, Brazil”, PAB, vol. 47, no. 11, pp. 1621–1628, Dec. 2012.