Falahudin, A., and N. Insin. “Removal of Propylparaben in an Aqueous System using Magnetite-Silica Ferrofluids of Hydrophobic Deep Eutectic Solvent”. Applied Science and Engineering Progress, vol. 17, no. 3, July 2024, p. 7344, doi:10.14416/j.asep.2024.03.001.