On the Efficient Solution of Nonlinear Finite Element Equations I. H.D. Mittelmann — 1980 Numerische Mathematik
On the Approximate Solution of Nonlinear Variational Inequalities. H.D. Mittelmann Numerische Mathematik
On the Efficient Solution of Nonlinear Finite Element Equations. II. Bound-Constrained Problems. H.D. Mittelmann Numerische Mathematik
On Multi-Grid Methods for Variational Inequalities. W. Hackbusch; H.D. Mittelmann — 1983 Numerische Mathematik