Izzatie, N. I., et al. “Co-Pyrolysis of Rubberwood Sawdust (RWS) and Polypropylene (PP) in a Fixed Bed Pyrolyzer”. Journal of Mechanical Engineering and Sciences, vol. 13, no. 1, Mar. 2019, pp. 4636-47, doi:10.15282/jmes.13.1.2019.20.0390.