Publications
On unique factorization semilattices. Discuss. Math. Gen. Algebra Appl.. 2000;20:97-120.
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 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.
Heart Rate Variability in Children Submitted to Surgery. Journal of Anesthesia & Clinical Research. 2016;7.Edit
Dicionário de Matemática Elementar, de Stella Baruk. Vol 2 Edições Afrontamento 2005.Edit
On finite-index extensions of subgroups of free groups. J. Group Theory. 2010;13:365-381.Edit
Luis Inacio Woodhouse (1857-1927). Vol 1. U. Porto Edições ed. 2018.Edit
Rational languages and inverse monoid presentations. Internat. J. Algebra Comput.. 1992;2:187-207.
Numerical relations and skill level constrain co-adaptive behaviors of agents in sports teams. PloS one. 2014;9:e107112.Edit
The homomorphism problem for the free monoid. Discrete Math.. 2002;259:189-200.
Equações no «Libro de Algebra» de Pedro Nunes. Vol 68 APM 2002.Edit
[2015-41] On the circulation of algebraic knowledge in the Iberian península:the sources of Pérez de Moya's Tratado de Arithmetica (1573) .Edit
On free inverse monoid languages. RAIRO Inform. Théor. Appl.. 1996;30:349-378.
On an algorithm to decide whether a free group is a free factor of another. Theor. Inform. Appl.. 2008;42:395-414.Edit
The homomorphism problem for trace monoids. Theoret. Comput. Sci.. 2003;307:199-215.
The algebraic content of Bento Fernandes’s Tratado da arte de arismetica (1555). Historia Mathematica . 2008;35 :190-219.Edit