On global convergence of iterative methods -- Multi-grid solution of continuation problems -- A fast solver for nonlinear eigenvalue problems -- A device for the acceleration of convergence of a monotonously enclosing iteration method -- Overrelaxation in monotonically convergent iteration methods -- Simple bounds for zeros of systems of equations -- Das Auflรถsungsverhalten von nichtlinearen Fixmengen-Systemen -- On the convergence of a class of newton-like methods -- ADI-methods for nonlinear variational inequalities of evolution -- Relaxation methods for the computation of the spectral norm -- Numerical computation of periodic solutions of a nonlinear wave equation -- Erfahrungen bei der Anwendung numerischer Verfahren zur Lรถsung nichtlinearer hyperbolischer Differentialgleichungssysteme -- On the simultaneous determination of polynomial roots