@Article{Nederhof:2000,
      AUTHOR = {Nederhof, Mark-Jan},
      TITLE = {Practical Experiments with Regular Approximation of Context-Free Languages},
      YEAR = {2000},
      JOURNAL = {Computational Linguistics},
      VOLUME = {26},
      NUMBER = {1},
      PAGES = {17-44},
      URL = {ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/nederhof00.ps.gz ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/nederhof00.entry},
      ANNOTE = {COLIURL : Nederhof:2000:PER.pdf Nederhof:2000:PER.ps}
}