Nonconforming Finite Element Methods for Eigenvalue Problems in Linear Plate Theory. R. Rannacher — 1979 Numerische Mathematik
Extrapolation Techniques for Reducing the Pollution Effect of Reentrant Corners in the Finite Element Method. R. Rannacher; H. Blum Numerische Mathematik
On the order of pointwise convergence of some boundary element methods. Part I. Operators of negative and zero order R. Rannacher; W. L. Wendland — 1985 ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique
Asymptotic Error Expansion and Richardson Extrapolation for Linear Finite Elements. R. Rannacher; H. Blum; Q. Lin — 1986 Numerische Mathematik