On Brzozowski's Conjecture for the Free Burnside Semigroup Satisfying x2 = x3. - Andrey N. Plyushchenko; Arseny M. Shur (Developments in Language Theory, 2011)

Almost Overlap-Free Words and the Word Problem for the Free Burnside Semigroup Satisfying X2 = X3. - Andrey N. Plyushchenko; Arseny M. Shur (Int. J. Algebra Comput., 2011)