From the contents: A. Arosio: Global solvability of second order evolution equations in Banach scales.- H. Beirao da Veiga: On the incompressible limit of the compressible Navier-Stokes equations.- A. Bove: Propagation of singularities for hyperbolic operators with double characteristics.- G. Buttazzo: Relaxation problems in control theory.- R. Finn: The inclination of an H-graph.- P.R. Garabedian: On the mathematical theory of vortex sheets.- N...