@article {1756,
	title = {Mechanism of Motor reduction with variable rigidity and rapidly controllable},
	year = {2010},
	address = {USA},
	keywords = {Robotics},
	issn = {US7699731},
	author = {A. Bicchi and G. Tonietti}
}
@article {1755,
	title = {Meccanismo motoriduttore a rigidezza variabile e rapidamente controllabile},
	year = {2004},
	address = {Italy},
	keywords = {Robotics},
	issn = {PI2004A000077},
	author = {A. Bicchi and G. Tonietti}
}
