[{"id":"2013-tjeerd-de-graaf-documentation-and-revitalisation-of-two-endangered","type":"article-journal","title":"Documentation and revitalisation of two endangered languages in eastern Asia: Nivkh and Ainu","author":[{"literal":"Tjeerd de Graaf"},{"literal":"白石 英才"}],"issued":{"date-parts":[[2013]]},"language":"ain"}]