@article {1972856,
	title = {Mining comparative opinions from customer reviews for competitive intelligence},
	journal = {Decision Support Systems},
	volume = {50},
	year = {2011},
	month = {2011},
	pages = {743-754},
	keywords = {BIS},
	author = {Xu,Kaiquan and Liao,Stephan S and Li,Jiexun}
}