@article {16492,
	title = {Adaptive pull-based policies for wide area data delivery},
	journal = {ACM Transactions on Database Systems (TODS)},
	volume = {31},
	year = {2006},
	month = {2006///},
	pages = {631 - 671},
	author = {Bright,L. and Gal,A. and Raschid, Louiqa}
}
