Silva PV. Fixed points of endomorphisms of virtually free groups. Pacific J. Math.. 2013;263:207-240.

Silva PV. Clifford monoid presentations. Math. Proc. Cambridge Philos. Soc.. 1992;111:445-454.

[2006-21] Silva M. The algebraic contents of Bento Fernandes’ Tratado da arte de arismetica (1555) .

Silva PV, Steinberg B. A geometric characterization of automatic monoids. Q. J. Math.. 2004;55:333-356.Edit

Silva PV. Fixed points of endomorphisms over special confluent rewriting systems. Monatsh. Math.. 2010;161:417-447.

[2015-26] Silva MC, Magalhães ML. Vida e Obra de Luis Inacio Woodhouse (1857-1927) .Edit

[2017-28] Silva PV, Zakharov A. On finitely generated submonoids of free groups .

Silva PV. The word problem for nilpotent inverse monoids. Semigroup Forum. 1995;51:285-293.

Silva MC, Estrada MF. José Anastácio da Cunha e a Álgebra do seu tempo. CMUM ed. Portugal, Braga: Universidade do Minho. Centro de Matemática (CMAT) 2005.Edit

Silva PV. Fixed points of endomorphisms of certain free products. RAIRO Theor. Inform. Appl.. 2012;46:165-179.

Silva MC, Mirra ME, Ribeiro MF. Dicionário de Matemática Elementar, de Stella Baruk. Vol 2 Edições Afrontamento 2005.Edit

Silva PV, Soler-Escrivà X, Ventura E. Finite automata for Schreier graphs of virtually free groups. J. Group Theory. 2016;19:25-54.Edit

[2008-29] Silva PV, Weil P. Automorphic orbits in free groups: words versus subgroups .Edit

Silva P., Aguiar P, Duarte R, Davids K, Araújo D, Garganta J. Effects of pitch size and skill level on tactical behaviours of Association Football players during small-sided and conditioned games. International Journal of Sports Science & Coaching. 2014;9:993-1006.Edit

Silva P., Garganta J, Araújo D, Davids K., Aguiar P. Shared knowledge or shared affordances? insights from an ecological dynamics approach to team coordination in sports. Sports Medicine. 2013;43:765-772.Edit

Silva PV. A note on primeness of semigroup rings. Proc. Roy. Soc. Edinburgh Sect. A. 1992;120:191-197.

Silva PV. An application of first-order logic to the study of recognizable languages. Internat. J. Algebra Comput.. 2004;14:785-799.

[2016-13] Silva PV, Soares F. Local finiteness for Green relations in (I-)semigroup varieties .Edit

Silva M, Magalhães ML. Luis Inacio Woodhouse (1857-1927). Vol 1. U. Porto Edições ed. 2018.Edit

[2006-1] Sharkasi A, Crane M, Ruskin HJ, Matos J.. The Reaction of Stock Markets to Crashes and Events: A Comparison Study between Emerging and Mature .Edit

Sharkasi A., Ruskin H., Crane M, Matos J., Gama SM. A wavelet-based method to measure stock market development. Open Journal of Statistics. 2014;4:86-96.Edit

Shamarova E, Chertovskih R, Ramos AF, Aguiar P. Backward-stochastic-differential-equation approach to modeling of gene expression. Physical Review E. 2017;95:032418.Edit

Shahzamanian M., Shirmohammadi M., Davvaz B.. Roughness in Cayley graphs. Inform. Sci.. 2010;180:3362-3372.Edit

Shahzamanian M.. The congruence $\eta^*$ on semigroups. Q. J. Math.. 2016;67:405-424.

Severo M., Trindade P., Gaio A.. Avaliação temporal do conhecimento matemático dos alunos da FCUP à entrada do ensino superior - Boletim da Sociedade Portuguesa de Estatística 2016.Edit