M. Schatzman, A class of nonlinear differential equations of second order in time, Nonlinear Analysis: Theory, Methods & Applications, vol.2, issue.3, pp.355-373, 1978.
DOI : 10.1016/0362-546X(78)90022-6

URL : https://hal.archives-ouvertes.fr/hal-01294058

J. J. Moreau, Standard Inelastic Shocks and the Dynamics of Unilateral Constraints, Unilateral problems in structural analysis, pp.173-221, 1983.
DOI : 10.1007/978-3-7091-2632-5_9

M. Monteiro-marques, Differential inclusions in nonsmooth mechanical problems, 1993.

A. Bressan, Incompatibilità dei teoremi di esistenza e di unicità del moto per un tipo molto comune e regolare di sistemi meccanici, pp.333-348, 1960.

P. Ballard, The dynamics of discrete mechanical systems with perfect unilateral constraints. Archive for Rational Mechanics and Analysis 154, pp.199-274, 2000.
URL : https://hal.archives-ouvertes.fr/hal-00111308

D. Percivale, Uniqueness in the elastic bounce problem, Journal of Differential Equations, vol.56, issue.2, pp.206-215, 1985.
DOI : 10.1016/0022-0396(85)90105-6

URL : https://hal.archives-ouvertes.fr/hal-01294061

P. Ballard, Formulation and well-posedness of the dynamics of rigid-body systems with perfect unilateral constraints, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol.359, issue.1789, pp.2327-2346, 2001.
DOI : 10.1098/rsta.2001.0854

P. Ballard, Formulation and well-posedness of the dynamics of rigid bodies systems with unilateral or frictional constraints, Advances in Mechanics and Mathematics, pp.3-88, 2002.
URL : https://hal.archives-ouvertes.fr/hal-00112294