@inproceedings{SIGIR-2005-ShiWYSM,
	author        = "Shuming Shi and Ji-Rong Wen and Qing Yu and Ruihua Song and Wei-Ying Ma",
	booktitle     = "{Proceedings of the 28th International ACM SIGIR Conference on Research and Development in Information Retrieval}",
	doi           = "10.1145/1076034.1076117",
	isbn          = "1-59593-034-5",
	pages         = "488--495",
	publisher     = "{ACM}",
	title         = "{Gravitation-based model for information retrieval}",
	year          = 2005,
}