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DJVU PDF Michailovsky, B. 1975, "A case of rhinoglottophilia in Hayu", in Linguistics of the Tibeto-Burman Area, vol. 2, no. 2, pp. 293-293. cite.

DJVU PDF Park, I. 1994, "Grammaticalized verbs in Hayu", in Linguistics of the Tibeto-Burman Area, vol. 17, no. 1, pp. 99-123. cite.