@inproceedings{SIGIR-2014-JiangA,
	author        = "Jiepu Jiang and James Allan",
	booktitle     = "{Proceedings of the 37th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/2600428.2609536",
	isbn          = "978-1-4503-2257-7",
	pages         = "1167--1170",
	publisher     = "{ACM}",
	title         = "{Necessary and frequent terms in queries}",
	year          = 2014,
}