@misc{Siekmann2015,
  author    = {Helmut Siekmann},
  title     = {Exit, exclusion, and parallel currencies in the euro area},
  booktitle = {Working paper series / Institute for Monetary and Financial Stability ; 99},
  url       = {http://www.imfs-frankfurt.de/fileadmin/user_upload/IMFS_WP/IMFS_WP_99.pdf},
  institution = {Wirtschaftswissenschaften},
  series    = {Working paper series / Institute for Monetary and Financial Stability},
  number    = {99},
  type      = {workingpaper},
  pages     = {26},
  year        = {2015},
}