@article{JohnKessler1995,
  author    = {John, Helmut and Keßler, Christine},
  title     = {Interpretatorische Zug{\"a}nge zu einem poetischen Text : Heiner M{\"u}ller: Der gl{\"u}cklose Engel},
  year      = {1995},
  language  = {de}
}
@article{KesslerJohn1997,
  author    = {Keßler, Christine and John, Helmut},
  title     = {Sprachskepsis in poetischen Texten},
  year      = {1997},
  language  = {de}
}