| Title | Authors | Synthesis | Publisher | Keywords |
| Generalized Multi-dimensional Data Mapping and Query Processing | Rui Zhang, et al. | This paper propose a framework GiMP can be customized to different data mapping schemas, for example, the UB-Tree, the Pyramid technique, the iMinMax and the iDistance. | TODS 2005 | |
| Integrating the UB-Tree into a Database System Kernel | Frank Ramsak, et al. | The paper presents the experience of intergrating the UB-Tree into a database system. 1. The UB-Tree is just like the B-Tree except the key is calculated from multidimentional attributes using methods like the Z-Order. 2. Page splitting is also a little different. It is better to split the page near the middle point. So that the performance is better on average. | VLDB 2000 |