М. Г. АТАМАНОВ(2006)。Once More about the Origin of Udmurt。Linguistica Uralica,42(2),103-111。https://www.airitilibrary.com/Article/Detail?DocID=17367506-200606-201011030002-201011030002-103-111
Tong, D. (2007). Reappearance of the classic [master's thesis, The University of Hong Kong]. Airiti Library. https://www.airitilibrary.com/Article/Detail?DocID=U0029-1812201200015987
Chan, S. R. (2006). Inspired by the Hindu tradition [master's thesis, The University of Hong Kong]. Airiti Library. https://www.airitilibrary.com/Article/Detail?DocID=U0029-1812201200014831