1. Bradely, N.: The XML Companion, Paperback, Subsequent Edition,
http://www.ebay.com/ctg/Xml-Companion-Neil-Bradley-2001-Paperback-Subsequent-Edition-/2193386
2. Extensible Markup Language (XML) Recommendation,
http://www.w3.org/TR/2000
3. Luk, R.W., Leong, H., Dillon, T.S., Shan, A.T., Croft, W.B., Allan, J.: A survey in indexing and searching XML documents. Journal of the American Society for Information Science and Technology 53(3), 415–435 (2002)
4. Lecture Notes in Computer Science;F. Weigel,2004
5. Li, Q., Moon, B.: Indexing and querying XML data for regular path expressions. In: Proceedings of the 27th VLDB Conference, Roma, Italy (2001)