Soo, C.-S., W.-S. Yap, W.-M. Hon, N. Ramli, U. K. M. Shah, and L.-Y. Phang. “Co-Production of Hydrogen and Ethanol by Escherichia Coli SS1 and Its Recombinant”. Electronic Journal of Biotechnology, vol. 30, no. 1, Nov. 2017, https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/2017.09.002.