WAOA 2009 -- On the Competitiveness of the Online Asymmetric and Euclidean Steiner Tree Problems -- Extension of the Nemhauser and Trotter Theorem to Generalized Vertex Cover with Applications -- Price Fluctuations: To Buy or to Rent -- Approximation Algorithms for Multiple Strip Packing -- Approximating Frequent Items in Asynchronous Data Stream over a Sliding Window -- Longest Wait First for Broadcast Scheduling [Extended Abstract] -- The Routing Open Shop Problem: New Approximation Algorithms -- On the Price of Stability for Undirected Network Design -- Finding Dense Subgraphs in G(n,1/2) -- Parameterized Analysis of Paging and List Update Algorithms -- Online Scheduling of Bounded Length Jobs to Maximize Throughput -- On the Additive Constant of the k-Server Work Function Algorithm -- A (4?+??)-Approximation for the Minimum-Weight Dominating Set Problem in Unit Disk Graphs -- Guard Games on Graphs: Keep the Intruder Out! -- Between a Rock and a Hard Place: The Two-to-One Assignment Problem -- Scheduling and Packing Malleable Tasks with Precedence Constraints of Bounded Width -- Online Minimization Knapsack Problem -- Optimization Problems in Multiple Subtree Graphs -- Multi-Criteria TSP: Min and Max Combined -- Packet Routing: Complexity and Algorithms -- Minimal Cost Reconfiguration of Data Placement in Storage Area Network -- Competitive Multi-dimensional Dynamic Bin Packing via L-Shape Bin Packing.