@book { EfficientMemoizationAlgorithmsforQueryOptimizationTopDownJoinEnumerationthroughMemoizationontheBasisofHypergraphs, title = "Efficient Memoization Algorithms for Query Optimization: Top-Down Join Enumeration through Memoization on the Basis of Hypergraphs", author = "Pit {Fender}", year = "2014", publisher = "Anchor Academic Publishing", address = "Hamburg, Germany", url = "https://m.anchor-publishing.com/document/312792" }