Paul Harrenstein, Mathijs de Weerdt, Vincent Conitzer. A qualitative vickrey auction. In John Chuang, Lance Fortnow, Pearl Pu, editors, Proceedings 10th ACM Conference on Electronic Commerce (EC-2009), Stanford, California, USA, July 6--10, 2009. pages 197-206, ACM, 2009. [doi]
Abstract is missing.