@misc{OPUS4-28409,
  title     = {DGaaE-Nachrichten : Jahrgang 3 (1989), Heft 3},
  booktitle = {DGaaE-Nachrichten},
  volume    = {3},
  number    = {3},
  issn      = {0931-4873},
  type      = {periodicalpart},
  pages     = {53 -- 84},
  year        = {1989},
}