Wulandari, W.; Jahsy, N. A.; Tandias, A. H.; Rizkiana, J.; Rubani, I. S.; Saputera, W. H.; Sasongko, D. Torrefaction of Rubberwood Waste: The Effects of Particle Size, Temperature & Residence Time. J. Eng. Technol. Sci. 2020, 52, 137-152.