@book{1904maitrejohnbatchelorgrammarainulanguage,
  title = {John Batchelor : A Grammar of the Ainu Language},
  author = {Claude Eugène Maître},
  year = {1904},
  language = {ain},
  url = {https://www.persee.fr/doc/befeo\_0336-1519\_1904\_num\_4\_1\_1387}
}