Holger Brocks Ulrich Thiel Adelheit Stein Andrea Dirsch-Weigand Customizable Retrieval Functions Based on User Tasks in the Cultural Heritage Domain. 37-48 2001 conf/ercimdl/2001 ECDL http://link.springer.de/link/service/series/0558/bibs/2163/21630037.htm db/conf/ercimdl/ecdl2001.html#BrocksTSD01