@incollection{Cet:01b,
  publisher = {Kluwer Acad. Publ.},
  address = {Dordrecht},
  title = {Some algebraic properties of contexts and their applications to
           contextual languages},
  author = {Ceterchi, Rodica},
  year = {2001},
  booktitle = {Where mathematics, computer science, linguistics and biology
               meet},
  pages = {219--226},
}