Assawamongkholsiri, T., and A. Reungsang. “Photo-Fermentational Hydrogen Production of Rhodobacter Sp. KKU-PS1 Isolated from an UASB Reactor”. Electronic Journal of Biotechnology, vol. 18, no. 3, May 2015, https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/2015.03.011.