1. Thesis;S Akkouche,1979
2. Auzinger, W., Stetter, H. J.: Defect corrections and multigrid iterations. In: Hackbusch-Trottenberg [19, pp. 327–351].
3. Babuska, I., Rosenzweig, M. B.: A finite element scheme for domains with corners. Numer. Math. 20, 1–21 (1972).
4. Bjørstad, P. E., Widlund, O. B.: Solving elliptic problems on regions partitioned into substructures. (To appear.)
5. Blum, H., Dobrowolski, M.: On finite element methods for elliptic equations on domains with corners. Computing 28, 53–63 (1982).