Siddique, M.N.I., and M.F. Ahmad. “Improvement of Methane Yield by Anaerobic Co-Digestion of Sewage and Petrochemical Wastewater: Effect of Temperature”. Asian Journal of Chemistry 31, no. 12 (November 16, 2019): 2816–2820. Accessed November 24, 2024. https://asianpubs.org/index.php/ajchem/article/view/31_12_20.