@article{FelgentreffHellerLindneretal.2000,
  author    = {Felgentreff, Carsten and Heller, Wilfried and Lindner, Waltraud and Thieme, Siegfried and Viehrig, Hans},
  title     = {Socio-Economic Transformation of East Germany},
  year      = {2000},
  language  = {en}
}
@article{ThiemeHeller2000,
  author    = {Thieme, Siegfried and Heller, Wilfried},
  title     = {Transformation in der Landwirtschaft und im l{\"a}ndlichen Raum der ostdeutschen Bundesl{\"a}nder},
  year      = {2000},
  language  = {de}
}