@book{1999hideshinarumiainugotoindoyoroppasogogogenohikakusuruthe,
  title = {Ainugo to Indo-Yoroppa sogo: Gogen o hikakusuru = The Ainu language and the Indo-European protolanguage},
  author = {鳴海 日出志},
  year = {1999},
  language = {ain},
  url = {https://openlibrary.org/works/OL9951240W}
}