K. M. PURLU, E. ISIK, B. KAFKASLIOGLU YILDIZ, and K. ELMABRUK, “Microstructural and Dielectric Characterization of MgO-added Al₂O₃-based Ceramics in the Terahertz Range ”, ISPEC J. Sci. Institute, vol. 4, no. 2, pp. 83–92, Dec. 2025.