@article{BuerklinDalton1995,
  author    = {B{\"u}rklin, Wilhelm and Dalton, Russell J.},
  title     = {The two german electorates : the social bases of the vote in 1990 and 1994},
  year      = {1995},
  language  = {en}
}
@article{BuerklinDaltonDrummond2000,
  author    = {B{\"u}rklin, Wilhelm and Dalton, Russell J. and Drummond, Andrew},
  title     = {Zwei Gesichter der Demokratie : Repr{\"a}sentative versus 'direkte' Demokratie},
  year      = {2000},
  language  = {de}
}