Nonlinear Programming: W. Achtziger, M.P. Bendsoe:Optimal Design of Discrete Engineering Structures Resisting Effects of Material Degradation.- S. Dempe, J.F. Bard: A Bundle Trust Region Algorithm for Bilinear Bilevel Programming.- C. Grossmann:Convergence Analysis for General Penalty Path-Following Newton Iterations.- V. Kalashnikov, A.A. Khan:A Regularization Approach for Variational Inequalities with Pseudo-Monotone Operators.- M.T.T. Monteiro, E.M.G.P. Fernandes:A Curvilinear Pseudo-Newton Algorithm for Nonlinear Programming.- S. Vogel, S. Dempe:Pathfollowing and Jumps in Bilevel Programming.- G. Wanka, R.-I. Bot:Multiobjective Duality for Convex-Linear Problems.- U. Würker:Maximum Representation of Some Convex Marginal Functions Without Constant Rank Regularity.- Combinatorial and Discrete Optimization: R. Brandenberg:Polyatomic Discrete Tomography - Polyhedral Aspects.- G. Confessore, P. Dell'Olmo, S. Giordani:Orienting Dart-free Clique-Helly Chordal Graphs.- A.V. Eremeev:On Some Approximation Algorithms for Dense Vertex Cover Problem.- E.Kh. Gimadi, A.I. Serdyukov:A Probabilistic Analysis of an Approximation Algorithm for the Minimum Weight Spanning Tree Problem with Bounded from Below Diameter.- G. Gruber, F. Rendl:Approximating Stable Sets Using the v--function and Cutting Planes.- N. Moeri, T.M. Liebling, P. Bucher:Optimizing Generalized Profiles for Enhanced Discrimination of Biomolecular Sequences.- M. Oswald, G. Reinelt:Polyhedral Aspects of the Consecutive Ones Problem.- G. Scheithauer:Solving One-Dimensional Cutting Stock Problems Exactly with a Cutting Plane Algorithm.- Graphs and Complexity: G. Di Battista:Graph Drawing:the Aesthetics-Complexity Trade-Off.Invited Lectures.- M. Kubale, K. Manuszewski:The Smallest Hard-to-Color Graphs for Sequential Coloring Algorithms.- Control Theory: W.H. Schmidt:Optimal Control in Economical and Technical Problems. Invited Lecture.- H. Dietrich:Über Probleme der optimalen Steuerungmit einer Quasivariationsungleichung.- R. Tsoneva, T.Patarinska:Robust Control of Continuous Fermentation Processes Described by Monod-type Model with Delay.- Stochastic Models and Optimization: G.Ch. Pflug, A. Swietanowski:Asset-liability Optimization for Pension Fund Management.Invited Lecture.- V. Kankov:Multistage Stochastic Programming; Stability, Approximation and Markov Dependence.- C.-H. Meyer, H. Knublauch:Parallel Iterative Proportional Fitting.- K. Sladky:Error Bounds and Sensitivity Analysis of Semi-Markov Processes.- Econometrics and Statistics: N. Fickel:Partition of the Coefficient of Determination in Multiple Regression.- M. Wilczynski:Minimax Estimation Under Random Sample Size.- A. Zagdanski:Using the Sieve Bootstrap Method in Time Series Analysis.- Mathematical Economics and Economic Theory: C.-J. Haake:Support and Implementation of the Kalai-Smorodinsky Bargaining Solution.- Game and Decision Theory: T. Börgers:When Does Learning Lead to Nash Equilibrium? Invited Lecture.- D. Campisi, P. Mancuso: Cooperative and Noncooperative R&D Activities in an Oligopolistic Market.- A. Chwolka:The Timing of Informational Activities in Decision and Control Problems.- E. Girlich, M. Kovalev, A. Zaporozhets:On Properties of Optimal Solutions of Allocation Problems with Polymatroid Feasible Region.- M.G. Raith:Cooperative Procedures for Multiple-Issue Negotiations.- Experimental Economics: W. Güth:Game-Playing Experiments. Invited Lecture.- J. Brosig:Signaling and Identifying the Willingness to Cooperate: Some Experimental Results.- Artificial Intelligence, Neural Networks, and Fuzzy Systems: R. Kruse, C. Borgelt, D. Nauck:Data Mining mit Neuro-Fuzzy-Systemen. Invited Lecture.- D. Alexandrov, Y. Kochetov:Behavior of the Ant Colony Algorithm for the Set Covering Problem.- L. Beinsen, M. Kührer:Comparison of Exchange Rate Forecasts by Neural Networks and by Econometric Methods.- W.