@TechReport{Müller:1998_1,
      AUTHOR = {Müller, Stefan},
      TITLE = {An HPSG-Analysis for Free Relative Clauses in German},
      YEAR = {1998},
      NUMBER = {224},
      ADDRESS = {Saarbrücken},
      TYPE = {Verbmobil Report},
      INSTITUTION = {DFKI},
      URL = {http://www.dfki.de/~stefan/PS/freeRel.ps},
      ANNOTE = {COLIURL : Muller:1998:HAF.pdf Muller:1998:HAF.ps}
}