@Article{articleDAM2007,
  author =       {Richard, A. and Comet, J.-P.},
  title =        {Necessary conditions for multistationarity in discrete
                  dynamical systems},
  journal =      {Discrete Applied Mathematics},
  year =         {2007},
  OPTkey =       {},
  volume =       {155},
  number =       {18},
  pages =        {2403--2413},
  OPTmonth =     {},
  OPTnote =      {},
  OPTannote =    {}
}