1. Extrapolation and related techniques for solving elliptic equations;Rüde,1991
2. Difference Methods and their Extrapolations;Marchuk,1983
3. Asymptotic error expansions and Richardson extrapolation for linear finite elements;Blum;Numerische Mathematik,1986
4. Adaptive higher order multigrid methods;Rude,1991
5. Asymptotic error expansion and defect correction in the finite element method;Blum,1991