Angar, Y., S. Kebbouche-Gana, and N-E Djelali. “Comparison of Biological Nitrate Reduction Effectiveness of Two Strains Isolated from Activated Sludge”. Asian Journal of Chemistry 28, no. 2 (November 6, 2015): 463–466. Accessed July 5, 2024. https://asianpubs.org/index.php/ajchem/article/view/28_2_49.