Zhen Li, Zuoqiang Shi & Jian Sun. (2019). Point Integral Method for Solving Poisson-Type Equations on Manifolds from Point Clouds with Convergence Guarantees.
            <i>Communications in Computational Physics</i>. <i>22</i> (1).
            228-258.
         doi:10.4208/cicp.111015.250716a