@Manual{st:gamsbaron:7.2.5,
  author =   "N.~V. Sahinidis and M. Tawarmalani",
  title =    "{BARON 7.2.5: Global Optimization of Mixed-Integer
                Nonlinear Programs, {\em User's Manual}}",
  year  =    "2005",
  OPTnote =  "{Available at
                \url{http://www.gams.com/dd/docs/solvers/baron.pdf}}",
}