R. L. Jawad and R. S. Abbas, “Exploring the Variation of Urbach Energies Between Anatase and Rutile Phases of TiO2 Nanoparticles in Polymer-Based Hybrid Composites”, IHJPAS, vol. 38, no. 1, pp. 186–196, Jan. 2025, doi: 10.30526/38.1.3986.