From website:
These applets are based on algorithms published in the following books:
* H. Samet, Applications of Spatial Data Structures: Computer Graphics, Image Processing, and GIS , Addison-Wesley, Reading, MA, 1990.
* H. Samet, The Design and Analysis of Spatial Data Structures , Addison-Wesley, Reading, MA, 1990.
* H. Samet, Foundations of Multidimensional and Metric Data Structures, Morgan-Kaufmann, San Francisco, 2006