@inproceedings{VLDB-2003-Ramanan,
	author        = "Prakash Ramanan",
	booktitle     = "{Proceedings of the 29th International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/2003/papers/S06P03.pdf",
	isbn          = "0-12-722442-4",
	pages         = "165--176",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Covering Indexes for XML Queries: Bisimulation — Simulation = Negation}",
	year          = 2003,
}