@inproceedings{ziparo_et_al_iav07,
   author = {V.A. Ziparo and A. Kleiner and L. Marchetti and A. Farinelli
	and D. Nardi},
   title = {Cooperative Exploration for {USAR} Robots with Indirect
	Communication},
   booktitle = {Proc. of 6th IFAC Symposium on Intelligent Autonomous
	Vehicles (IAV)},
   year = {2007}
}