@inproceedings{cccg-06
, title =       "The PKD-tree for Orthogonal $d$-Dimensional Range Search"
, author =      "Bradford Nickerson and Qingxiu Shi"
, booktitle =   "Proceedings of the 18th Canadian Conference on Computational Geometry (CCCG'06)"
, site =        "Kingston"
, year =        2006
, pages =       "147--150"
}