@inproceedings{RE-2006-TangL,
	author        = "Jian Tang and Donglin Liang",
	booktitle     = "{Proceedings of the 14th International Requirements Engineering Conference}",
	doi           = "10.1109/RE.2006.32",
	isbn          = "0-7695-2555-5",
	pages         = "348--351",
	publisher     = "{IEEE Computer Society}",
	title         = "{Improving the Modeling of Use Case Relationship}",
	year          = 2006,
}