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DJVU PDF Diller, A. 1992, "On the history of tone-marking in Asian languages", in The Third International Symposium on Language and Linguistics, Bangkok, Thailand, pp. 628-638. Chulalongkorn University. cite.

DJVU PDF Toan, V. 1992, "The Tay-Nung language in contact with the Vietnamese", in The Third International Symposium on Language and Linguistics, Bangkok, Thailand, pp. 909-919. Chulalongkorn University. cite.