@article{Steidel1996,
  author    = {Steidel, Gunnar},
  title     = {Dialect systems of micro-populations in scarlet rosefinches Carpodacus erythrinus},
  year      = {1996},
  language  = {en}
}
@article{SteidelWallschlaegerHelb1998,
  author    = {Steidel, Gunnar and Wallschl{\"a}ger, Hans-Dieter and Helb, Hans-Wolfgang},
  title     = {Beziehungsgef{\"u}ge der Kurzstrohen des Karmingimpels (Carpodacus erythrinus) im mitteleurop{\"a}ischen Expansionsgebiet},
  year      = {1998},
  language  = {de}
}
@article{Steidel1996,
  author    = {Steidel, Gunnar},
  title     = {Dialekte des Karmingimpels, Carpodacus erythrinus, in ausgew{\"a}hlten mitteleurop{\"a}ischen Brutgebieten},
  year      = {1996},
  language  = {de}
}
@phdthesis{Steidel2001,
  author    = {Steidel, Gunnar},
  title     = {Nutzung erlernter Verhaltenselemente zur Indikation populationsbiologischer Beziehungen des Karmingimpels (Carpodacus erythrinus)},
  pages     = {111, XXII S.},
  year      = {2001},
  language  = {de}
}