@article{Balog:2012:ER,
	author = {Balog, K. and Fang, Y. and de Rijke, M. and Serdyukov, P. and Si, L.},
	title = {Expertise Retrieval},
	journal = {Foundations and Trends in Information Retrieval},
	volume = {6},
	number = {2-3},
	year = {2012},
	pages = {127-256},
}