S. Ayyappan, S. Murugan, M. Rama. “Green-Assisted Synthesis and Multi-Functional Evaluation of TiO₂–ZrO₂–Cu Nanocomposite for Enhanced Antibacterial, Antioxidant, and Anticancer Performance”. The International Journal of Multiphysics, vol. 14, no. 2, May 2020, pp. 215 -29, https://themultiphysicsjournal.com/index.php/ijm/article/view/2031.