@unpublished{Drechsler,
  author    = {Drechsler, Dirk},
  title     = {Korruption = Black Box?, Ein Fallstudienansatz zur Ann{\"a}herung an ein komplexes Thema},
  series = {Risk, Fraud \& Compliance},
  volume    = {11},
  number    = {1},
  issn      = {1867-8386},
  language  = {de}
}