Albrecht Schmidt 0002 Martin L. Kersten Menzo Windhouwer Florian Waas Efficient Relational Storage and Retrieval of XML Documents. 47-52 2000 WebDB (Informal Proceedings) http://www.research.att.com/conf/webdb2000/PAPERS/3c.ps db/conf/webdb/webdb2000.html#SchmidtKWW00