A. Tjoa, R. Bruckner, T. Ling, J. Zhang:
"Building XML Data Warehouse Based on Frequent Patterns in User Queries";
in: "Proc. Data Warehousing and Knowledge Discovery 2003", Springer, Heidelberg, 2003, ISBN: 3-540-40807-x, 99 - 108.
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04404595