@inproceedings{DocEng-2006-Witschel,
	author        = "Hans Friedrich Witschel",
	booktitle     = "{Proceedings of the Sixth Symposium on Document Engineering}",
	doi           = "10.1145/1166160.1166172",
	isbn          = "1-59593-515-0",
	pages         = "32",
	publisher     = "{ACM}",
	title         = "{Carrot and stick: combining information retrieval models}",
	year          = 2006,
}