@InProceedings{Werner-Soft08,
  author =       {Tom{\'a}{\v s} Werner},
  title =        {Marginal Consistency: Unifying Constraint Propagation on Commutative Semirings},
  booktitle = {Intl.\ Workshop on Preferences and Soft Constraints},
  pages =     {43-57},
  year =      {2008},
  month =     {September},
}