@book{Goertemaker1994,
  author    = {G{\"o}rtemaker, Manfred},
  title     = {Unifying Germany : 1989 - 1990},
  publisher = {St. Martin's Press},
  address   = {New York},
  pages     = {352 S.},
  year      = {1994},
  language  = {en}
}