@techreport{Erb:Usz:90,
  author = {Erbach, Gregor and Uszkoreit, Hans}, 
  title = {Grammar Engineering. {P}roblems and Prospects},
  address = {Saarbr{\"u}cken, Germany},
  year = 1990,
  type = {{CLAUS} Report},
  number = {1},
  institution = COLI
}