L. H. Chi, P. D. Long, N. V. Chuc, and L. V. Hong, “Hydrothermal Synthesis and Enhanced Photocatalytic Activity of TiO\(_{2}\)-Fe@CNTs Nanocomposite for Methylene Blue Degradation under Visible Light Irradiation”, Comm. Phys., vol. 24, no. 4, p. 363, Mar. 2015.