@article{JungraithmayrLeger2006,
  author    = {Herrmann Jungraithmayr and Rudolf Leger},
  title     = {The Benue-Gongola-Chad Basin : zone of ethnic and linguistic compression},
  journal   = {Berichte des Sonderforschungsbereichs 268},
  volume    = {2},
  pages     = {161 -- 173},
  year      = {2006},
}