R. Agrawal, and R. Srikant. Proceedings of the 20th International Conference on
Very Large Data Bases, page 487--499. San Francisco, Morgan Kaufmann Publishers Inc., (1994)
R. Agrawal, and R. Srikant. VLDB '94: Proceedings of the 20th International Conference on Very Large Data Bases, page 487--499. San Francisco, CA, USA, Morgan Kaufmann Publishers Inc., (1994)