Publications
Renaissance sources of Juan Pérez de Moya’s geometries. Asclepio. Revista de Historia de la Medicina y de la Ciencia. 2013;65 (2)(julio-diciembre ):1-18.Edit
Fixed points of endomorphisms of virtually free groups. Pacific J. Math.. 2013;263:207-240.
A note on primeness of semigroup rings. Proc. Roy. Soc. Edinburgh Sect. A. 1992;120:191-197.
On unique factorization semilattices. Discuss. Math. Gen. Algebra Appl.. 2000;20:97-120.
Luis Inacio Woodhouse (1857-1927). Vol 1. U. Porto Edições ed. 2018.Edit
Conjugacy and transposition for inverse monoid presentations. Internat. J. Algebra Comput.. 1996;6:607-622.
A note on pure and $p$-pure languages. Acta Inform.. 2003;39:579-595.
a partitional clustering algorithm validated by a clustering tendency index based on graph theory. pattern recognition. 2006;39:776-788.Edit
Trees associated to inverse monoid presentations. J. Pure Appl. Algebra. 2001;165:307-335.
On finite-index extensions of subgroups of free groups. J. Group Theory. 2010;13:365-381.Edit
[2012-16] Groups and automata: a perfect match .
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.
Contribuição para o estudo do manuscrito Arte de Marear de Juan Pérez de Moya. LLULL. 2012;35(76):351-379.Edit
On an algorithm to decide whether a free group is a free factor of another. Theor. Inform. Appl.. 2008;42:395-414.Edit
On free inverse monoid languages. RAIRO Inform. Théor. Appl.. 1996;30:349-378.
The homomorphism problem for trace monoids. Theoret. Comput. Sci.. 2003;307:199-215.
Recognizable subsets of a group: finite extensions and the abelian case. Bull. Eur. Assoc. Theor. Comput. Sci. EATCS. 2002:195-215.