@techreport{
   Author = {Krieger, Hans-Ulrich and Sch{\"a}fer, Ulrich},
   Title = {TDL - A Type Description Language for HPSG. Part 1: Overview},
   Address = {Saarbr{\"u}cken},
   Institution = {DFKI},
   Number = {RR-94-37},
   Type = {Research Report},
   Year = {1994} }