G. Kappel, E. Kapsammer, W. Retschitzegger:
"Integrating XML and Relational Database Systems";
World Wide Web Journal (WWWJ), 7 (2004), 4; 343 - 384.
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04968339Electronic version of the publication:
http://www.big.tuwien.ac.at/research/publications/2003/1203.pdf