@misc{OPUS4-28421,
  title     = {DGaaE-Nachrichten : Jahrgang 7 (1993), Heft 4},
  booktitle = {DGaaE-Nachrichten},
  volume    = {7},
  number    = {4},
  issn      = {0931-4873},
  type      = {periodicalpart},
  pages     = {109 -- 124},
  year        = {1993},
}