Fourth Order Difference Approximations for Space Riemann-Liouville Derivatives Based on Weighted and Shifted Lubich Difference Operators. Commun. Comput. Phys. [Internet]. 2014 Aug. 3 [cited 2025 Dec. 5];16(2):516-40. Available from: https://global-sci.com/index.php/cicp/article/view/6220