@book{FrickeZhengKramer2006,
  author    = {Fricke, Dieter and Zheng, Xia and Kramer, Frank},
  title     = {Einf{\"u}hrung in die Volkswirtschaftslehre},
  isbn      = {978-3-937443-06-5},
  pages     = {225},
  year      = {2006},
  language  = {de}
}