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DJVU PDF HAYES, La Vaughn H. 1982. On Daic loans and initial mutations in Thavung. MKS 11:101-114.
DJVU PDF HAYES, La Vaughn H. 1984. The register systems of Thavung. MKS 12:91-122.
DJVU PDF HAYES, La Vaughn H. 1992. On the track of Austric:part I. MKS 21:143-177.
DJVU PDF HAYES, La Vaughn H. 1992. Vietic and Viet-Muong: a new subgrouping in Mon-Khmer. MKS 21:211-228.
DJVU PDF HAYES, La Vaughn H. 1997. On the track of Austric part II. Consonant mutation in early Austroasiatic. MKS 27:13-41.
DJVU PDF HAYES, La Vaughn H. 1999. On the track of Austric part III. basic vocabulary comparison. MKS 29:1-34.