Rusmidi, Muhamad Helmi Husaini, et al. “IC₅₀- Based Comparison of Astaxanthin and Tocotrienols Across Raw 264.7, A549, and Calu-3 Cells”. Journal of Science and Technology, vol. 18, no. 1, June 2026, pp. 111-8, https://publisher.uthm.edu.my/ojs/index.php/JST/article/view/23789.