@inproceedings{LiMM.10, author = {Sotirios Liaskos and Sheila A. McIlraith and Shirin Sohrabi, John Mylopoulos}, title = {Integrating Preferences into Goal Models for Requirements Engineering}, booktitle = {Proceedings of the 10th International Requirements Engineering Conference (RE'10)}, year = {2010}, pages={135 -144}, address = {Sydney, Australia} }