1. Frederickson, P.O., McBryan, O.A.: Parallel superconvergent multigrid. Techn. Report 7/87, Cornell University 1987
2. Hackbusch, W.: A new approach to robust multi-grid methods. In: McKenna, J., Temam, R. (eds.) ICIAM '87: Proceedings of the First International Conference on Industrial and Applied Mathematics. SIAM, Philadelphia 1988
3. Hackbusch, W.: Multi-grid methods and applications, 1st Ed. Heidelberg Berlin New York: Springer 1985
4. Hackbusch, W.: The frequency decomposition multi-grid method. In: Hackbusch, W. (ed.) Robust multi-grid methods, pp. 96?104. Braunschweig: Vieweg 1989
5. Stüben, K., Trottenberg, U.: Multi-grid methods: fundamental algorithms, model problem analysis and applications. In: Hackbusch, W., Trottenberg, M. (eds.) Multi-grid methods, pp. 1?176. Heidelberg Berlin New York: Springer 1982