@misc{Siekmann2016,
  author    = {Helmut Siekmann},
  title     = {Replacing or supplementing the euro in member states whose currency is the euro},
  booktitle = {Working paper series / Institute for Monetary and Financial Stability ; 109},
  institution = {Wirtschaftswissenschaften},
  series    = {Working paper series / Institute for Monetary and Financial Stability},
  number    = {109},
  type      = {workingpaper},
  pages     = {36},
  year        = {2016},
}