Xu , JinjingZhao , FeiSheng , Zhiqiang and Yuan , Guangwei. (2021). A Nonlinear Finite Volume Scheme Preserving Maximum Principle for Diffusion Equations.
            <i>Communications in Computational Physics</i>. <i>29</i> (3).
            747-766.
         doi:10.4208/cicp.OA-2020-0047