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DJVU PDF Hayes, L.V.H. 1982, "The mutation of *R in Pre-Thavung", in The Mon-Khmer Studies Journal, vol. 11, pp. 83-100. cite.

DJVU PDF Hayes, L.V.H. 1982, "On Daic loans and initial mutations in Thavung", in The Mon-Khmer Studies Journal, vol. 11, pp. 101-114. cite.