-Sulev, Iva. 2010. "Grade Alternation in Võro south Estonian". Linguistica uralica, XLVI 3, pp. 161 - 174.
-Sulev, Iva. 2010. Examples of grade alternation types of nouns, in "Grade Alternation in Võro south Estonian". Linguistica uralica, XLVI 3, pp. 171.