@inproceedings{BBK98,
 author = {Berchtold, Stefan and Böhm, Christian and Kriegel, Hans-Peter},
 booktitle = {Proc.\ 6th Int.\ Conf.\ on Extending Database Technology, (Valencia, Spain)},
 title = {Improving the Query Performance of High--Dimensional Index Structures Using Bulk--Load Operations},
 year = {1998}
}