Preface. Navigating Graph Surfaces; J. Abello, S. Krishnan. The Steiner Ratio of Lp-planes; J. Albrecht, D. Cieslik. Hamiltonian Cycle Problem via Markov Chains and Min-type Approaches; M. Andramonov, et al. Solving Large Scale Uncapacitated Facility Location Problems; F. Barahona, F. Chudak. A Branch - and - Bound Procedure for the Largest Clique in a Graph; E.R. Barnes. A New `Annealed' Heuristic for the Maximum Clique Problem; I.M. Bomze, et al. Inapproximability of some Geometric and Quadratic Optimization Problems; A. Brieden, et al. Convergence Rate of the P-Algorithm for Optimization of Continious Functions; J.M. Calvin. Application of Semidefinite Programming to Circuit Partitioning; C.C. Choi, Y. Ye. Combinatorial Problems Arising in Deregulated Electrical Power Industry: Survey and Future Directions; D. Cook, et al. On Approximating a Scheduling Problem; P. Crescenzi, et al. Models and Solution for On-Demand Data Delivery Problems; M.C. Ferris, R.R. Meyer. Complexity and Experimental Evaluation of Primal-Dual Shortest Path Tree Algorithms; P. Festa, et al. Machine Partitioning and Scheduling under Fault-Tolerance Constraints; D.A. Fotakis, P.G. Spirakis. Finding Optimal Boolean Classifiers; J. Franco. Tighter Bounds on the Performance of First Fit Bin Packing; M. Furer. Block Exchange in Graph Partitioning; W.W. Hager, et al. On the Efficient Approximability of `HARD' Problems; A Survey; H.B. Hunt III, et al. Exceptional Family of Elements, Feasibility, Solvability and Continuous Paths of epsilon-Solutions for Nonlinear Complementarity Problems; G. Isac. Linear Time Approximation Schemes for Shop Scheduling Problems; K. Jansen, et al. On Complexity and Optimization in EmergentComputation; V. Korotkich. Beyond Interval Systems: What Is Feasible and What Is Algorithmically Solvable? V. Kreinovich. A Lagrangian Relaxation of the Capacitated Multi-Item Lot Sizing Problem Solved with an Interior Point Cutting Plante Algorithm; O. du Merle, et al. An Approximate Algorithm For a Weapon Target Assignment Stochastic Program; R.A. Murphey. Continuous-based Heuristics for Graph and Tree Isomorphisms, with Application to Computer Vision; M. Pelillo, et al. Geometric Optimization Problems for Steiner Minimal Trees in E3; J. MacGregor Smith. Optimization of a Simplified Assignment Problem with Metaheuristics: Simulated Annealing and GRASP; D. Sosnowska. Towards Implementations of Successive Convex Relaxation Methods for Nonconvex Quadratic Optimization Problems; A. Takeda, et al. Piecewise Concavity and Discrete Approaches to Continuous Minimax Problems; F. Tardella. The MCCNF Problem with a Fixed Number of Nonlinear Arc Costs: Complexity and Approximation; H. Tuy. A New Parametrization Algorithm for the Linear Complementarity Problem; S. Verma, et al. Obtaining an Approximate Solution for Quadratic Maximization Problems; Y. Yajima.