Guerrero, S. Arias, and P. C. van Welzen. “REVISION OF MALESIAN ENDOSPERMUM (EUPHORBIACEAE) WITH NOTES ON PHYLOGENY AND HISTORICAL BIOGEOGRAPHY”. Edinburgh Journal of Botany, vol. 68, no. 3, Oct. 2011, pp. 443-82, https://doi.org/10.1017/S0960428611000321.