Thomas Graf V. Kamakoti N. S. Janaki Latha C. Pandu Rangan The Colored Sector Search Tree: A Dynamic Data Structure for Efficient High Dimensional Nearest-Foreign-Neighbor Queries. 35-44 http://link.springer.de/link/service/series/0558/bibs/1449/14490035.htm 1998 conf/cocoon/1998 COCOON db/conf/cocoon/cocoon98.html#GrafKLR98