@article{BergdoltDemirag2006,
  author    = {Anja Bergdolt and Ulac Demirag},
  title     = {Changes in settlement pattern and culture - the process of down-hill migration in Tula, Bauchi State},
  journal   = {Berichte des Sonderforschungsbereichs 268},
  volume    = {8},
  pages     = {129 -- 132},
  year      = {2006},
}