Florian Matthes Claudia Niederée Ulrike Steffens C-Merge: A Tool for Policy-Based Merging of Resource Classifications. 352-365 2001 conf/ercimdl/2001 ECDL http://link.springer.de/link/service/series/0558/bibs/2163/21630352.htm db/conf/ercimdl/ecdl2001.html#MatthesNS01