23. 出典
(1)Antonin Guttman. 1984. R-trees: a dynamic index structure for spatial searching.
SIGMOD Rec. 14, 2 (June 1984), 47–57. DOI:https://doi.org/10.1145/971697.602266
(2)Finkel, R. A.; Bentley, J. L. (1974). "Quad trees a data structure for retrieval on composite keys".
Acta Informatica. 4 (1): 1–9. doi:10.1007/BF00288933.
(3)Jon Louis Bentley. 1975. Multidimensional binary search trees used for associative
searching. Commun. ACM 18, 9 (Sept. 1975), 509–517. DOI:https://doi.org/10.1145/361002.361007
(4) 中村 泰明 , 出木原裕順 , 時間属性をもった空間データの管理構造 : PMD 木 ,
情報処理学会論文誌 , May 1999, Vol.40,No.SIG5 (TOD2) pp. 54-68
(5) Yuni Xia and S. Prabhakar, "Q+Rtree: efficient indexing for moving object databases,"
Eighth International Conference on Database Systems for Advanced Applications, 2003.
(DASFAA 2003). Proceedings., 2003, pp. 175-182, doi: 10.1109/DASFAA.2003.1192381.