Hanh, N. N., P. Q. Khoi, and V. H. Thao. “Photocatalytic Degradation of 2,4-Dichlorophenoxyacetic Acid on N-Doped Titanium Dioxide”. Vietnam Journal of Chemistry, vol. 54, no. 2, July 2016, p. 199, doi:10.15625/0866-7144.2016-00260.