A Zaidon, I Umar, SH Lee, and R Halis. “OIL-HEAT TREATMENT OF RUBBERWOOD FOR OPTIMUM CHANGES IN CHEMICAL CONSTITUENTS AND DECAY RESISTANCE”. Journal of Tropical Forest Science (JTFS), vol. 28, no. 1, Jan. 2016, pp. 88-96, https://jtfs.frim.gov.my/jtfs/article/view/553.