@article{ClarkCoeckeSadr2,
  title = "Relating Algebraic and Coalgebraic Logics of Knowledge and Update",
  author = "C. Cirstea and M. Sadrzadeh",
  year = "2006",
  journal = "LOFT, University of Liverpool, 2006.",
  publisher = "University of Liverpool",
  series = "Proceedings of  the 7'th conference on Logic and the Foundations of Game and Decision Theory",
}