Gray and Atkinson 2003

Gray, Russell D. and Atkinson, Quentin D. 2003. Language-tree divergence times support the Anatolian theory of Indo-European origin. Nature 426. 435-439.

@article{jacquesestimative-gray03ie,
  author  = {Gray, Russell D. and Atkinson, Quentin D.},
  journal = {Nature},
  pages   = {435-439},
  title   = {Language-tree divergence times support the Anatolian theory of Indo-European origin},
  volume  = {426},
  year    = {2003}
}