Almeida J. Implicit operations on finite $\scr J$-trivial semigroups and a conjecture of I. Simon. J. Pure Appl. Algebra. 1991;69:205-218.Edit

Almeida J. On iterated semidirect products of finite semilattices. J. Algebra. 1991;142:239-254.Edit

Almeida J. On the membership problem for pseudovarieties of commutative semigroups. Semigroup Forum. 1991;42:47-51.Edit

Almeida J. Recent developments in the theory of implicit operations. In: Monoids and semigroups with applications (Berkeley, CA, 1989). World Sci. Publ., River Edge, NJ; 1991. 1. p. 105-117p. Edit

Almeida J. Semigrupos finitos e álgebra universal Universidade de São Paulo, Instituto de Matemática e Estatí stica, São Paulo 1991.Edit

Almeida J. Counting factors in words, semidirect products and power semigroups. In: Words, languages and combinatorics (Kyoto, 1990). World Sci. Publ., River Edge, NJ; 1992. 1. p. 1-15p. Edit

Almeida J. On the power semigroup of a finite semigroup. Portugal. Math.. 1992;49:295-331.Edit

Almeida J, Pin J., Weil P. Semigroups whose idempotents form a subsemigroup. Math. Proc. Cambridge Philos. Soc.. 1992;111:241-253.Edit

Almeida J. Implicit operations and Knast's theorem. In: Semigroups (Luino, 1992). World Sci. Publ., River Edge, NJ; 1993. 1. p. 1-16p. Edit

Almeida J. Locally commutative power semigroups and counting factors of words. Theoret. Comput. Sci.. 1993;108:3-16.Edit

Almeida J, Azevedo A. On regular implicit operations. Portugal. Math.. 1993;50:35-61.Edit

Almeida J. A unified syntactical approach to theorems of Putcha, Margolis, and Straubing on finite power semigroups. Semigroup Forum. 1993;46:90-97.Edit

Almeida J. A classification of aperiodic power monoids. J. Algebra. 1994;170:355-387.Edit

Almeida J. Finite semigroups and universal algebra. Vol 3 World Scientific Publishing Co., Inc., River Edge, NJ 1994.Edit

Almeida J, Weil P. Reduced factorizations in free profinite groups and join decompositions of pseudovarieties. Internat. J. Algebra Comput.. 1994;4:375-403.Edit

Almeida J, Weil P. Free profinite semigroups over semidirect products. Izv. Vyssh. Uchebn. Zaved. Mat.. 1995:3-31.Edit

Almeida J. The mathematician Hugo Ribeiro. Portugal. Math.. 1995;52:1-14.Edit

Almeida J, Weil P. Relatively free profinite monoids: an introduction and examples. In: Semigroups, formal languages and groups (York, 1993). Vol 466. Kluwer Acad. Publ., Dordrecht; 1995. 7. p. 73-117p. (NATO Adv. Sci. Inst. Ser. C Math. Phys. Sci.; vol 466).Edit

Almeida J. A syntactical proof of locality of DA. Internat. J. Algebra Comput.. 1996;6:165-177.Edit

Almeida J, Weil P. Free profinite $\scr R$-trivial monoids. Internat. J. Algebra Comput.. 1997;7:625-671.Edit

Almeida J, Higgins PM. Monoids respecting $n$-chains of intervals. J. Algebra. 1997;187:183-202.Edit

Almeida J, Zeitoun M. The pseudovariety $\bf J$ is hyperdecidable. RAIRO Inform. Théor. Appl.. 1997;31:457-482.Edit

Almeida J, Volkov M. The gap between partial and full. Internat. J. Algebra Comput.. 1998;8:399-430.Edit

Almeida J, Silva PV. On the hyperdecidability of semidirect products of pseudovarieties. Comm. Algebra. 1998;26:4065-4077.Edit

Almeida J. On a problem of Brzozowski and Fich. In: Semigroups and applications (St. Andrews, 1997). World Sci. Publ., River Edge, NJ; 1998. 1. p. 1-17p. Edit