1. Finite Semigroups and Universal Algebra;Almeida,1995
2. A syntactical proof of locality of DA;Almeida;Internat. J. Algebra Comput.,1996
3. J. Almeida, S.W. Margolis, B. Steinberg, M.V. Volkov, Representation theory of finite semigroups, semigroup radicals and formal language theory, preprint 2004.
4. A combinatorial description of the spectrum for the Tsetlin library and its generalization to hyperplane arrangements;Bidigare;Duke Math. J.,1999
5. Semigroups, rings, and Markov chains;Brown;J. Theoret. Probab.,2000