Y. Al-Bayati, A., S. A. Manaa, and A. M. Al-Rozbayani. “A Crank-Nicolson Method of Autocatalytic Reaction-Diffusion Systems”. AL-Rafidain Journal of Computer Sciences and Mathematics, vol. 3, no. 2, Dec. 2006, pp. 41-52, doi:10.33899/csmj.2006.164050 .