@book{Schuermann1990,
  author    = {Sch{\"u}rmann, Wilhelm},
  title     = {Das n{\"o}tig},
  publisher = {Ed. Travers},
  address   = {Neuchatel},
  pages     = {121 S. : nur Ill.},
  year      = {1990},
  language  = {de}
}