Manurung, Posman, Rudy Situmeang, Perdinan Sinuhaji, and Simon Sembiring. 2020. “Effect of Sulfur Doped Nanotitania for Degradation of Remazol Yellow and Phenol”. Asian Journal of Chemistry 32 (12):3019-23. https://doi.org/10.14233/ajchem.2020.22854.