The h - p version of the boundary element method on polygonal domains with quasiuniform meshes E. P. Stephan; M. Suri — 1991 ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique
A boundary element procedure for contact problems in plane linear elastostatics J. Gwinner; E. P. Stephan — 1993 ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique