Bibliography 2022令和4年 Satō, Tomomi (2022). "Major old documents of Ainu and some problems in the historical study of Ainu". In Anna Bugaeva (ed.), Handbook of the Ainu Language, chapter 3, pp. 79–98. Berlin: De Gruyter Mouton. Citations: 1 History of the sourceEzo hōgen moshiogusa1 Composition, transmission and study of the yukar