Suratago, T., and K. Nootong. “Production of 1,3-Propanediol by Clostridium Butyricum DSM 5431 in an Anaerobic Moving-Bed Bioreactor”. Macedonian Journal of Chemistry and Chemical Engineering, vol. 31, no. 2, Dec. 2012, pp. 245–253, doi:10.20450/mjcce.2012.23.