@inproceedings{aamas08,
    title = {Goals in Agent Systems: A Unifying Framework},
    author = {M. Birna van Riemsdijk and Mehdi Dastani and Michael Winikoff},
    booktitle = "Proceedings of the seventh international joint conference on autonomous agents and multiagent systems (AAMAS'08)",
    pages = "713--720",
    address = "Estoril",
	publisher = "IFAAMAS",
    year = 2008
}