@TechReport{KepserRichts-LTCS-96-04,
  author =       {Kepser, S. and Richts, J.},
  title =        {Optimisation Techniques for Combining Constraint Solvers},   
  institution =  {LuFG Theoretical Computer Science, RWTH Aachen},
  year =         1996,
  type =         {LTCS-Report},  
  number =       {LTCS-96-04},
  address =      {Germany},
}