Preface.- Dynamic Analysis of Structures and Structural Systems (D. E. Beskos).- Materially Nonlinear Analysis (M. Bonnet).- Hypersingular and Mixed Boundary Elements in Fracture Mechanics (J. Dominguez, M. P. Ariza).- The Symmetric Galerkin BEM in Linear and Nonlinear Fracture Mechanics (A. Frangi, G. Maier).- Classical and Unilateral Contact Analysis in Statics and Dynamics (G. E. Stavroulakis, H. Antes).- Sensitivity Analysis, Optimization and Inverse Problems (T. Burczynski).