Publications
A geometric characterization of automatic monoids. Q. J. Math.. 2004;55:333-356.Edit
Luis Inacio Woodhouse (1857-1927). Vol 1. U. Porto Edições ed. 2018.Edit
Fixed points of endomorphisms over special confluent rewriting systems. Monatsh. Math.. 2010;161:417-447.
The word problem for nilpotent inverse monoids. Semigroup Forum. 1995;51:285-293.
[2012-16] Groups and automata: a perfect match .
On the circulation of algebraic knowledge in the Iberian península: the sources of Pérez de Moya's Tratado de Arithmetica (1573). Revue d'histoire des mathématiques . 2016;2:145-184.Edit
Fixed points of endomorphisms of certain free products. RAIRO Theor. Inform. Appl.. 2012;46:165-179.
Dicionário de Matemática Elementar, de Stella Baruk. Vol 2 Edições Afrontamento 2005.Edit
A note on primeness of semigroup rings. Proc. Roy. Soc. Edinburgh Sect. A. 1992;120:191-197.
An application of first-order logic to the study of recognizable languages. Internat. J. Algebra Comput.. 2004;14:785-799.
On unique factorization semilattices. Discuss. Math. Gen. Algebra Appl.. 2000;20:97-120.
Groups and automata: a perfect match. J. Automata Lang. Combin.. 2012;17(2-4):277-292.
[2015-25] On the circulation of algebraic knowledge in the Iberian península: the sources of Pérez de Moya's Tratado de Arithmetica (1573) .Edit
Equações no «Libro de Algebra» de Pedro Nunes. Vol 68 APM 2002.Edit
The algebraic content of Bento Fernandes’s Tratado da arte de arismetica (1555). Historia Mathematica . 2008;35 :190-219.Edit
Conjugacy and transposition for inverse monoid presentations. Internat. J. Algebra Comput.. 1996;6:607-622.
Howson’s property for semidirect products of semilattices by groups. Comm. Algebra. 2016;44(6):2482-2494.Edit
a partitional clustering algorithm validated by a clustering tendency index based on graph theory. pattern recognition. 2006;39:776-788.Edit
A note on pure and $p$-pure languages. Acta Inform.. 2003;39:579-595.
Trees associated to inverse monoid presentations. J. Pure Appl. Algebra. 2001;165:307-335.