@book{Hoepfner2002,
  author    = {Niels H{\"o}pfner},
  title     = {Zschokke : ein sanfter Rebell ; Bibliographie 1991 - 2002},
  url       = {http://www.angelfire.com/ms/zschokke/Zschokke.pdf},
  year      = {2002},
}