@book{jacquesestimative-glottolog,
  address      = {Jena},
  author       = {Hammarström, Harald and Forkel, Robert and Haspelmath, Martin and Bank, Sebastian},
  howpublished = {Max Planck Institute for the Science of Human History},
  title        = {Glottolog 4.3},
  url          = {https://glottolog.org/ accessed 2020-11-27},
  year         = {2020}
}