@book{GraebschBurkhardt2014,
  author    = {Graebsch, Christine M. and Burkhardt, Sven-Uwe},
  title     = {Ambulant sanctions as an alternative to imprisonment in the European Union?},
  publisher = {Center for the Study of Democracy},
  address   = {Sofia},
  isbn      = {978-954-477-220-8},
  pages     = {120},
  year      = {2014},
  language  = {en}
}
@book{TaegerKuhnt2014,
  author    = {Taeger, Dirk and Kuhnt, Sonja},
  title     = {Statistical hypothesis testing with SAS and R},
  publisher = {Wiley},
  address   = {Chichester},
  isbn      = {978-1-119-95021-9},
  pages     = {XIV, 292},
  year      = {2014},
  language  = {en}
}