José Manuel Barrueco Cruz Markus J. R. Klink Thomas Krichel Personal Data in a Large Digital Library. 127 2000 conf/ercimdl/2000 ECDL http://link.springer.de/link/service/series/0558/bibs/1923/19230127.htm db/conf/ercimdl/ecdl2000.html#CruzKK00