@article{BuetowBuetowGartenetal.1995,
  author    = {B{\"u}tow, Heike and B{\"u}tow, Martin and Garten, Gerd and Markert, Wolfgang and Meier, Uwe and Meißgeier, J{\"u}rgen},
  title     = {Seydlitz Erdkunde 4 : Gymnasium},
  editor    = {Jahn, Gert},
  publisher = {Schroedel},
  address   = {Hannover},
  pages     = {192 S.},
  year      = {1995},
  language  = {de}
}
@article{BuetowBuetowGartenetal.1995,
  author    = {B{\"u}tow, Heike and B{\"u}tow, Martin and Garten, Gerd and Markert, Wolfgang and Meier, Uwe and Meißgeier, J{\"u}rgen},
  title     = {Seydlitz Erdkunde 4 : Ausgabe E},
  editor    = {Jahn, Gert},
  publisher = {Schroedel},
  address   = {Hannover},
  pages     = {192 S.},
  year      = {1995},
  language  = {de}
}
@article{BricksBuetowBuetowetal.1995,
  author    = {Bricks, Wolfgang and B{\"u}tow, Heike and B{\"u}tow, Martin and Garten, Gerd and Markert, Wolfgang and Meier, Uwe and Meißgeier, J{\"u}rgen},
  title     = {Seydlitz Erdkunde 4 : Ausgabe Th{\"u}ringen},
  editor    = {Jahn, Gert},
  publisher = {Schroedel},
  address   = {Hannover},
  pages     = {192 S.},
  year      = {1995},
  language  = {de}
}