@misc{OPUS4-28447,
  title     = {DGaaE-Nachrichten : Jahrgang 15 (2001), Heft 4},
  booktitle = {DGaaE-Nachrichten},
  volume    = {15},
  number    = {4},
  issn      = {0931-4873},
  type      = {periodicalpart},
  pages     = {121 -- 156},
  year        = {2001},
}