@inproceedings{CamposLE09-esaw,
  title={Assistance Layerin a P2P scenario},
  author = {Jordi Campos and Maite L\'opez-S\'anchez and Marc Esteva },
  year = {2009},
  booktitle = {Engineering Societies in the Agents World X (ESAW'09). Lecture Notes in Artificial Intelligence},
  number =   "5881",
  pages = "229-232",
  publisher={Spinger}
}