- 2022 - 2027 古文献資料によるアイヌ語史の再検討
- 2017 - 2023 Towards understanding dynamics of language change in Ainu
- 2017 - 2022 A study of the history of the Ainu language based on the linguistic analyisis of old documents
- 2012 - 2016 Historical study of Ainu by old documents
- 2005 - 2008 The Reconstruction of the History of the Ainu Language by Old Documents
- 2000 - 2003 A Comparative Study of Ainu Dialects Based on Old Documents
- 2000 - 2002 環北太平洋地域における危機言語の総合的調査研究
- 2000 - 2002 消滅の危機にあるアイヌ語諸方言の方言分類に関する研究
- 1998 - 2000 Audio Data Base and Linguistic Change of the North Pacific Languages
- 1997 - 1999 Survey of Language-cultures in Amur-Sakhalin District
- 1999 - アイヌ語の抱合と語形成
- 1999 - Noun Incorporation and Word-formation in Ainu
- 1997 - 1998 古文献に現れたアイヌ語方言の研究
- 1996 - 1998 COLLECTED DATA OF A DEAD LANGUAGE, SAKHALIN AINU
- 1995 - 1997 A Comparative Study on Circumpolar Cultures-Language, Ecology and Worldview
- 1996 - 1996 江戸時代の古文献に現れたアイヌ語方言の研究
- 1994 - 1996 The linguistic data-base of languages of indigenous peoples in Northern Eurasia and the typological description of their features.
- 1993 - 古文献によるアイヌ語史の研究
- 1990 - 1992 RESEARCH ON LANGUAGES OF MINORITIES IN SAKHALIN - AINU, UILTA, NIVKH -
- 1989 - 1992 日本語アイヌ語二重言語話者の音声の収集と研究
- 1991 - 1991 日本語アイヌ語二重言語話者の音声の収集と研究
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