@inproceedings{SIGIR-2013-HeBV,
	author        = "Jiyin He and Marc Bron and Arjen P. de Vries",
	booktitle     = "{Proceedings of the 36th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/2484028.2484178",
	isbn          = "978-1-4503-2034-4",
	pages         = "897--900",
	publisher     = "{ACM}",
	title         = "{Characterizing stages of a multi-session complex search task through direct and indirect query modifications}",
	year          = 2013,
}