@misc{Zivny07:cpdp,
  abstract = "In this paper we present a project on the expressibility of valued constraints. We recall the result of Cohen et al. (CP'06) which characterises the expressibility of valued constraints in terms of algebraic properties of the constraints. We show why the current algebraic characterisation is rather unsatisfactory and what are the ways we try to explore in order to find a better one.",
  author = "Stanislav \v{Z}ivn\'y and Peter G. Jeavons",
  booktitle = "Proceedings of the Doctoral Programme of CP'07",
  month = "September",
  pages = "193-198",
  title = "Expressibility of valued constraints",
  url = "http://zivny.cz/publications/z07cp-dp.pdf",
  year = "2007",
}