@techreport{GoelvenBrogliato.2004,
  author	= {Goeleven, D. and Brogliato, B.},
  title		= {Necessary conditions of asymptotic stability for unilateral dynamical systems},
  institution	= {INRIA},
  year		= {2004},
  number	= {RR-5171},
  address	= {http_//www.inria.fr/rrrt/},
}