N. Zainol and J. Salihon and R. Abdul-Rahman, Biogas Production from Waste using Biofilm Reactor: Factor Analysis in Two Stages System. journal = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology. June 2009, vol. 30(6). 304 - 308 [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/11822.