@Article{MonGamFloNolDenDor05:ram,
  author     =   "F.~Mondada and L.~M.~Gambardella and D.~Floreano and  S.~Nolfi and J.-L.~Deneubourg and M.~Dorigo",
  title      =   "The Cooperation of Swarm-bots:
                  Physical Interactions in Collective Robotics",
  journal =     "IEEE Robotics & Automation Magazine",
  year =         "2005",
  month =        "June",
  volume =       "12",
  number =       "2",
  pages =        "21--28",
}