1. Smith, B., Bjorstad, P., and Gropp, W., Domain Decomposition: Parallel Multilevel Methods for Elliptic Partial Differential Equations, Cambridge University Press, 2004.
2. Volkov, E.A., On the Method of Composite Meshes for Laplace’s Equation on Polygons, Trudy Mat. Inst. Steklov, 1976, vol. 140, pp. 68–102.
3. Starius, G., Composite Mesh Difference Methods for Elliptic Boundary Value Problems, Numer. Math., 1977, vol. 28, no. 2, pp. 243–258.
4. Volkov, E.A., On the Solution of Laplace’s Equation on a Parallelepiped with Discontinuous Boundary Conditions by Methods of Uniform and Composite Grids, Soviet Math. Dokl., 1978, vol. 239, no. 5, pp. 1029–1032.
5. Dosiyev, A.A., A Fourth-Order Accurate Composite Grid Method for Solving Laplace’s Boundary Value Problems with Singularities, Comp. Math. Math. Phys., 2002, vol. 42, no. 6, pp. 832–849.