@article {3849,
	title = {Optimizing Multi-Top-K Queries Over Uncertain Data Streams},
	journal = {IEEE Transactions on Knowledge and Data Engineering (TKDE)},
	volume = {25},
	year = {2013},
	pages = {1814--1829},
	doi = {10.1109/TKDE.2012.126},
	author = {Tao Chen and Lei Chen and Tamer Ozsu and Nong Xiao}
}
