@conference {WPB-ICRA10,
	title = {Controllability for Pairs of Vehicles Maintaining Constant Distance},
	booktitle = {IEEE International Conference on Robotics and Automation (ICRA2010)},
	year = {2010},
	month = {May 3 - 8},
	pages = {342 - 349},
	address = {Anchorage, Alaska},
	keywords = {Embedded Control, Robotics},
	author = {H. Wang and L. Pallottino and A. Bicchi}
}
@conference {WPB_cdc10,
	title = {Controllability Properties for Aircraft Formations},
	booktitle = {International Conference on Decision and Control - CDC 2010},
	year = {2010},
	pages = {2047 - 2054},
	keywords = {Embedded Control, Robotics},
	author = {H. Wang and L. Pallottino and A. Bicchi}
}
