@incollection{Cet:98,
  volume = {1424},
  title = {Marcus contextual languages and their cut-and-paste properties},
  year = {1998},
  booktitle = {Rough sets and current trends in computing (Warsaw, 1998)},
  pages = {99--106},
  publisher = {Springer},
  address = {Berlin},
  author = {Ceterchi, Rodica},
  series = {Lecture Notes in Comput. Sci.},
}