DJVU PDF DIFFLOTH, Gérard. 1990. What happened to Austric?. MKS 16-17:1-9.
DJVU PDF HAYES, La Vaughn H. 1992. On the track of Austric:part I. MKS 21:143-177.
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.