@inproceedings{SAC-2007-Ries,
	author        = "Sebastian Ries",
	booktitle     = "{Proceedings of the 22nd Symposium on Applied Computing}",
	doi           = "10.1145/1244002.1244342",
	editor        = "Yookun Cho and Roger L. Wainwright and Hisham Haddad and Sung Y. Shin and Yong Wan Koo",
	isbn          = "1-59593-480-4",
	pages         = "1599--1604",
	publisher     = "{ACM}",
	title         = "{Certain trust: a trust model for users and agents}",
	year          = 2007,
}