Zheng , HuiWang , FengS. Chen , C.Lei , M. and Wang , Yong. (2020). Improved 3D Surface Reconstruction via the Method of Fundamental Solutions.
            <i>Numerical Mathematics: Theory, Methods and Applications</i>. <i>13</i> (4).
            973-985.
         doi:10.4208/nmtma.OA-2019-0192