Andrey Balmin, Vagelis Hristidis, Nick Koudas, Yannis Papakonstantinou, Divesh Srivastava, Tianqiu Wang. A System for Keyword Proximity Search on XML Databases. In Johann Christoph Freytag, Peter C. Lockemann, Serge Abiteboul, Michael J. Carey, Patricia G. Selinger, Andreas Heuer, editors, VLDB 2003, Proceedings of 29th International Conference on Very Large Data Bases, September 9-12, 2003, Berlin, Germany. pages 1069-1072, Morgan Kaufmann, 2003. [doi]