@misc{OPUS4-23080,
  title     = {IWF aktuell : Nr. 18},
  booktitle = {IWF aktuell},
  volume    = {1988},
  number    = {18 = April 1988},
  issn      = {0940-7561},
  type      = {periodicalpart},
  year        = {2012},
}