Publications
Fixed points of endomorphisms of virtually free groups. Pacific J. Math.. 2013;263:207-240.
Rational subsets of partially reversible monoids. Theoret. Comput. Sci.. 2008;409:537-548.
Clifford monoid presentations. Math. Proc. Cambridge Philos. Soc.. 1992;111:445-454.
A geometric characterization of automatic monoids. Q. J. Math.. 2004;55:333-356.Edit
Fixed points of endomorphisms over special confluent rewriting systems. Monatsh. Math.. 2010;161:417-447.
The algebraic content of Bento Fernandes’s Tratado da arte de arismetica (1555). Historia Mathematica . 2008;35 :190-219.Edit
The word problem for nilpotent inverse monoids. Semigroup Forum. 1995;51:285-293.
Luis Inacio Woodhouse (1857-1927). Vol 1. U. Porto Edições ed. 2018.Edit
Field dimension and skill level constrain team tactical behaviours in small-sided and conditioned games in football. Journal of sports sciences. 2014;32:1888-1896.Edit
Fixed points of endomorphisms of certain free products. RAIRO Theor. Inform. Appl.. 2012;46:165-179.
[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
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.
[2006-1] The Reaction of Stock Markets to Crashes and Events: A Comparison Study between Emerging and Mature .Edit
A wavelet-based method to measure stock market development. Open Journal of Statistics. 2014;4:86-96.Edit
Backward-stochastic-differential-equation approach to modeling of gene expression. Physical Review E. 2017;95:032418.Edit
Roughness in Cayley graphs. Inform. Sci.. 2010;180:3362-3372.Edit
The congruence $\eta^*$ on semigroups. Q. J. Math.. 2016;67:405-424.
Assessment of the general public's knowledge about rheumatic diseases: Evidence from a Portuguese population-based survey. BMC Musculoskeletal Disorders. 2010;11.Edit