@Article{Müller:1999_1,
      AUTHOR = {Müller, Stefan},
      TITLE = {An HPSG-Analysis for Free Relative Clauses in German},
      YEAR = {1999},
      JOURNAL = {Grammars},
      VOLUME = {2},
      NUMBER = {1},
      PAGES = {53-105},
      URL = {ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/mueller99b.entry http://www.dfki.de/~stefan/PS/freeRel.ps},
      ANNOTE = {COLIURL : Muller:1999:HAF.pdf Muller:1999:HAF.ps}
}