@article {liu2010analysis,
	title = {Analysis and evaluation of query reformulations in different task types},
	journal = {Proceedings of the American Society for Information Science and Technology},
	volume = {47},
	number = {1},
	year = {2010},
	pages = {1{\textendash}9},
	publisher = {Wiley Subscription Services, Inc., A Wiley Company Hoboken},
	author = {Chang Liu and Gwizdka, Jacek and Jingjing Liu and Tao Xu and Belkin, Nicholas J.}
}
