Rasheed, Shaker M. “Approximate Solutions for A Model of Reaction-Diffusion System With Slow Reaction and Fast Diffusion”. Science Journal of University of Zakho 4, no. 1 (June 30, 2016): 137–149. Accessed May 2, 2024. https://sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/315.