Ren-Jun Qi & Zhi-Zhong Sun. (2023). A Fast Temporal Second Order Difference Scheme for the Fractional Sub-Diffusion Equations on One Dimensional Space Unbounded Domain.
            <i>Journal of Mathematical Study</i>. <i>56</i> (2).
            173-205.
         doi:10.4208/jms.v56n2.23.05