@inproceedings{CerquidesEtAlIJCAI2007,
  author =        {Jes\'us Cerquides and Ulle Endriss and Andrea Giovannucci and Juan A.~Rodr\'\i guez-Aguilar},
  title =         {Bidding Languages and Winner Determination for Mixed Multi-unit Combinatorial Auctions},
  editor =        {M.~Veloso},
  booktitle =     {Proceedings of the 20th International Joint Conference on Artificial Intelligence (IJCAI-2007)},
  pages =         {1221--1226},
  address =       {Hyderabad, India},
  month =         {January},
  year =          {2007}
}