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Silva PV, Weil P. Automorphic orbits in free groups: words versus subgroups. Internat. J. Algebra Comput.. 2010;20:561-590.Edit

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

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

Silva PV. Normal-convex embeddings of inverse semigroups. Glasgow Math. J.. 1993;35:115-121.

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Silva PV. Groups and automata: a perfect match. J. Automata Lang. Combin.. 2012;17(2-4):277-292.

Silva MC. Equações no «Libro de Algebra» de Pedro Nunes. Vol 68 APM 2002.Edit

Silva PV, Soares F. Howson’s property for semidirect products of semilattices by groups. Comm. Algebra. 2016;44(6):2482-2494.Edit

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

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