1. M. Jakobsson, "Reducing Block Accesses in Inverted Files by Partial Clustering," Information Systems, Vol. 5, 1980, pp. 1–5.
2. J. Liou and S. B. Yao, "Multidimensional Clustering for Database Organizations," Information Systems, Vol. 2, No. 4, 1977, pp. 187–198.
3. E. Omiecinski, "Incremental File Reorganization Schemes," VLDB Conference Proceedings, Stockholm, Sweden, 1985, pp. 346–357.
4. E. Omiecinski and P. Scheuermann, "A Global Approach to Record Clustering and File Reorganization," in Research and Development in Information Retrieval,ed. C. J. van Rijsbergen, Cambridge Press, 1984, pp. 201–219.
5. P. Scheuermann and M. Ouksel, "Multidimensional B-trees for Associative searching in Database Systems," Information Systems, Vol. 7, No. 2, 1982, pp. 123–137.