@conference {VSB11,
	title = {Embodying Desired Behavior in Variable Stiffness Actuators},
	booktitle = {2011 Congress of the International Federation of Automatic Control - IFAC 2011},
	year = {2011},
	month = {August 28 - Sept},
	pages = {9733 - 9738},
	address = {Milano, italy},
	keywords = {Robotics},
	author = {L. C. Visser and S. Stramigioli and A. Bicchi}
}
