Futao Zhang, Yan Xu, Falai Chen and Ruihan Guo. (2018). Interior Penalty Discontinuous Galerkin Based Isogeometric Analysis for Allen-Cahn Equations on Surfaces.
            <i>Communications in Computational Physics</i>. <i>18</i> (5).
            1380-1416.
         doi:10.4208/cicp.150215.250515a