@inproceedings{core_coalitional_structures-conferenza,
  title = "On The Complexity of the Core over Coalition Structures",
  author = "Gianluigi Greco and Enrico Malizia and Luigi Palopoli and Francesco Scarcello",
  year = "2011",
  address = "Barcelona, Spain",
  booktitle = "Proceedings of the 22nd International Joint Conference on Artificial Intelligence (IJCAI-11)",
  editor = "Toby Walsh",
  month = "July 16--22",
  pages = "216--221",
  url = "http://ijcai.org/papers11/Papers/IJCAI11-047.pdf",
}