N. . Md Huzir, N. A. . Nik Mahmood, S. A. F. . Syed Muhammad, . N. A. . Umor, and S. . Ismail, “Effect of Specific Methanogenic Activity (SMA) of Anaerobic Sludge under High Salinity ”, J. Adv. Res. App. Sc. Eng. Tech., vol. 16, no. 1, pp. 35–40, Dec. 2020.