Analysis of Optimal Control in an Age–Structured Epidemic Model with Spatial Diffusion. Int J Sci Res Sci & Technol [Internet]. 2025 Oct. 20 [cited 2025 Oct. 30];12(5):543-54. Available from: https://www.ijsrst.technoscienceacademy.com/index.php/home/article/view/IJSRST25126258