@InCollection{MGL03-aco,
  author    = "Vittorio Maniezzo and Luca Maria Gambardella and F. de Luigi",
  title     = "Ant Colony Optimization",
  booktitle = "New Optimization Techiniques in Engineering",
  editor    = "G. C. Onwubolu and B. V. Babu",
  year      = 2003,
  keywords  = "bison",
  publisher = "Springer-Verlag",
  keywords  = "bison",
  pdfurl    = "http://www.cs.unibo.it/bison/publications/aco2004.pdf"
}