@inproceedings{BKS05a,
 author = {Bustos, Benjamin and Keim, Daniel A. and Schreck, Tobias},
 booktitle = {Proc. 20th Annual ACM Symposium on Applied Computing, Multimedia and Visualization Track (SAC-MV'05)},
 pages = {1180-1184},
 publisher = {ACM Press},
 title = {A pivot-based index structure for combination of feature vectors},
 year = {2005}
}