Soo, Chiu-Shyan, Wai-Sum Yap, Wei-Min Hon, Norhayati Ramli, Umi Kalsom Md Shah, and Lai-Yee Phang. 2017. “Improvement of Hydrogen Yield by Ethanol Producing Escherichia Coli Recombinants in Acidic Condition”. Electronic Journal of Biotechnology 26 (1). Valparaíso, Chile. https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/2016.12.007.