Estimate of the Constant in Two Strengthened C.B.S. Inequalities for F.E.M. Systems of 2D Elasticity: Application to Multilevel Methods and a Posteriori Error Estimators. - Boujemâa Achchab; J. F. Maître (Numer. Linear Algebra Appl., 1996)

Estimateur d'erreur a posteriori hiérarchique. Application aux éléments finis mixtes. - Boujemâa Achchab; Abdellatif Agouzal; Jacques Baranger; J. F. Maître (Numerische Mathematik, 1998)