@inproceedings{KCS+07a,
 author = {Keim, Daniel A. and Catarci, Tiziana and Santucci, Giuseppe and Schreck, Tobias and Iervella, Gloria and Iannarelli, Stefano and Veltri, Fabio},
 booktitle = {Proceedings of the Second DELOS Conference on Digital Libraries 5-7},
 month = {dec},
 title = {Visual Rank Analysis for Search Engine Benchmarking and Efficient Navigation},
 year = {2007}
}