An elasto-plastic contact problem Claes Johnson — 1978 ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique
An Elasto-Plastic Contact Problem Claes Johnson — 1977 Publications mathématiques et informatique de Rennes
A Mixed Finite Element Method for the Navier-Stokes Equations Claes Johnson — 1978 Publications mathématiques et informatique de Rennes
On the Convergence of a Mixed Finite-Element Method for Plate Bending Problems. Claes Johnson — 1973 Numerische Mathematik
Error estimates for some mixed finite element methods for parabolic type problems Claes Johnson; Vidar Thomee — 1981 ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique
Time discretization of parabolic problems by the discontinuous Galerkin method Kenneth Eriksson; Claes Johnson; Vidar Thomée — 1985 ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique