1. A fictitious domain method for Dirichlet problem an applications;Glowinski;Computer Methods in Applied Mechanics and Engineering,1971
2. The Direct solution of the discrete Poisson equation on irregular regions;Buzbee;SIAM Journal on Numerical Analysis,1971
3. Hackbusch W, Sauter SA. Composite finite elements for the approximation of PDEs on domains with complicated micro-structures. Preprint, 1991.
4. Automatic p-version mesh generation for curved domains;Luo;Engineering with Computers,2004