Tiril P. Gurholt & Xuecheng Tai. (2020). 3D Multiphase Piecewise Constant Level Set Method Based on Graph Cut Minimization.
            <i>Numerical Mathematics: Theory, Methods and Applications</i>. <i>2</i> (4).
            403-420.
         doi:10.4208/nmtma.2009.m9003s