Preface. Solving Complementarity Problems by Means of a New Smooth Constrained Nonlinear Solver; R. Andreani, J.M. Martinez. -Enlargements of Maximal Monotone Operators: Theory and Applications; R.S. Burachik, et al. A Non-Interior Predictor Corrector Path-Following Method for LCP; J.V. Burke, S. Xu.Smoothing Newton Methods for Nonsmooth Dirichlet Problems; X. Chen, etal. Frictional Contact Algorithms Based on Semismooth Newton Methods;P.W. Christensen, J.-S. Pang. Well-Posed Problems and Error Bounds in Optimization; S. Deng. Modeling and Solution Environments for MPEC: GAMS & MATLAB; S.P. Dirkse, M.C. Ferris. Merit Functions and Stability for Complementarity Problems; A. Fischer. Minimax and Triality Theory in Nonsmooth Variational Problems; D.Y. Gao. Global and Local Superlinear Convergence Analysis of Newton-Type Methods for Semismooth Equations with Smooth Least Squares; H. Jiang, D. Ralph.Inexact Trust-Region Methods for Nonlinear Complementarity Problems; C.Kanzow, M. Zupke. Regularized Newton Methods for Minimization of Convex Quadratic Splines with Singular Hessians; W. Li, J. Swetits.Regularized Linear Programs with Equilibrium Constraints; L.L.Mangasarian. Reformulations of a Bicriterion Equilibrium Model; P.Marcotte. A Smoothing Function and Its Applications; J.-M. Peng.On the Local Super-Linear Convergence of a Matrix Secant Implementation of the Variable Metric Proximal Point Algorithm for Monotone Operators; M.Qian, J.V. Burke. Reformulation of a Problem of Economic Equilibrium;A.M. Rubinov, B.M. Glover. A Globally Convergent Inexact NewtonMethod for Systems of Monotone Equations; M.V. Solodov, B.F.Svaiter. On the Limiting Behavior of the Trajectory of RegularizedSolutions of a P0 -Complementarity Problem;R. Sznajder, M.S.Gowda. Analysis of a Non-Interior Continuation Method Based on Chen-Mangasarian Smoothing Functions for Complementarity Problems; P.Tseng. A New Merit Function and a Descent Method for Semidefinite Complementarity Problems; N. Yamashita, M. Fukushima. Numerical Experiments for a Class of Squared Smoothing Newton Methods for Box Constrained Variational Inequality Problems; G. Zhou, et al.