@article {journals/dke/VakaliTBE03,
	title = {Hierarchical data placement for navigational multimedia applications},
	journal = {Data Knowl. Eng.},
	volume = {44},
	number = {1},
	year = {2003},
	pages = {49-80},
	author = {Athena Vakali and Terzi, Evimaria and Bertino, Elisa and Elmagarmid, Ahmed K.}
}