“On the $L_\infty$ Convergence and the Extrapolation Method of a Difference Scheme for Nonlocal Parabolic Equation with Natural Boundary Conditions” (2001) Journal of Computational Mathematics, 19(5), pp. 449–458. Available at: https://www.global-sci.com/index.php/JCM/article/view/11447 (Accessed: 5 December 2025).