Matthias Brantner, Carl-Christian Kanne, Guido Moerkotte, Sven Helmer. Algebraic Optimization of Nested XPath Expressions. In Ling Liu, Andreas Reuter, Kyu-Young Whang, Jianjun Zhang, editors, Proceedings of the 22nd International Conference on Data Engineering, ICDE 2006, 3-8 April 2006, Atlanta, GA, USA. pages 128, IEEE Computer Society, 2006. [doi]