@inproceedings{ICEIS-v2-2011-MaZ,
	author        = "Shao-qiu Ma and Yan Zheng",
	booktitle     = "{Proceedings of the 13th International Conference on Enterprise Information Systems, Volume 2}",
	isbn          = "978-989-8425-54-6",
	pages         = "287--290",
	publisher     = "{SciTePress}",
	title         = "{Research and Practice of Group Decision Systems}",
	year          = 2011,
}