Thorsten Fiebig Sven Helmer Carl-Christian Kanne Guido Moerkotte Julia Neumann Robert Schiele Till Westmann 12-33 2002 conf/jit/2002 Web, Web-Services, and Database Systems http://link.springer.de/link/service/series/0558/bibs/2593/25930012.htm db/conf/jit/webdb2002.html#FiebigHKMNSW02