@article {2000,
	title = {Quantized control systems and discrete nonholonomy},
	journal = {Lagrangian and Hamiltonian Methods for Nonlinear Control : a proc. volume from the IFAC Workshop. Princeton, New Jersey, 16-18 March 2000 / ed. by N.E. Leonard, R. Ortega. - Oxford : Pergamon, 2000},
	number = {SISSA;44/00/M},
	year = {2000},
	publisher = {Elsevier},
	isbn = {0-08-043658-7},
	url = {http://hdl.handle.net/1963/1502},
	author = {Alessia Marigo and Benedetto Piccoli and Antonio Bicchi}
}
