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

[2012-10] Silva PV. Fixed points of endomorphisms of virtually free groups .

[2010-15] Silva PV. Fixed points of endomorphisms of certain free products .

Silva PV. On unique factorization semilattices. Discuss. Math. Gen. Algebra Appl.. 2000;20:97-120.

[2014-19] Silva PV. An automata-theoretic approach to the study of fixed points of endomorphisms (to appear in a volume of the series Advanced Courses in Mathematics CRM Barcelona, Birkhäuser) .

Silva PV. Conjugacy and transposition for inverse monoid presentations. Internat. J. Algebra Comput.. 1996;6:607-622.

[2014-29] Silva PV, Soares F. Howson’s property for semidirect products of semilattices by groups .Edit

Silva PV. A note on pure and $p$-pure languages. Acta Inform.. 2003;39:579-595.

Silva H, Brito P., Da Costa J. a partitional clustering algorithm validated by a clustering tendency index based on graph theory. pattern recognition. 2006;39:776-788.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

Silva PV. Trees associated to inverse monoid presentations. J. Pure Appl. Algebra. 2001;165:307-335.

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 P., Weil P. On finite-index extensions of subgroups of free groups. J. Group Theory. 2010;13:365-381.Edit

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

[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 .

[2006-7] Silva PV, Weil P. On an algorithm to decide whether a free group is a free factor of another .Edit

Silva PV. Rational languages and inverse monoid presentations. Internat. J. Algebra Comput.. 1992;2:187-207.

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

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

Silva PV. The homomorphism problem for the free monoid. Discrete Math.. 2002;259:189-200.

[2009-10] Silva PV. Fixed points of endomorphisms over special confluent rewriting systems .

Silva PV, Weil P. On an algorithm to decide whether a free group is a free factor of another. Theor. Inform. Appl.. 2008;42:395-414.Edit

Silva PV. On free inverse monoid languages. RAIRO Inform. Théor. Appl.. 1996;30:349-378.