Artigos em Revistas Internacionais

• Branco, Mário J. J.; Gomes, Gracinda M. S.; Silva, Pedro V. (2019) On the semigroup rank of a group Semigroup Forum: 99, 568-578.

• Araújo, João; Gomes, Gracinda M. S.; Bentz, Wolfram (2018) Congruences on direct products of transformation and matrix monoids Semigroup Forum: 97, 384-416.

• Araújo, João; Kinyon, M. (2018) Decidability and Independence of Conjugacy Problems in Finitely Presented Monoids  Theoretical Computer Science.

• Branco, Mário J. J.; Gomes, Gracinda M. S.; Gould, Victoria; Wang, Yanhui (2018) Ehresmann monoids: adequacy and expansions Journal of Algebra: 513, 344-367.

• Soares, Filipa; Silva, Pedro V.; Volkov, Mikhail V. (2018) Local finiteness for Green's relations in semigroup varieties Communications in Algebra: 40 (10), 4625-4653.

• Araújo, João; Bentz, Wolfram; Cameron, P. J. (2018) Orbits of Primitive k-Homogenous Groups on (n-k)-Partitions with Applications to Semigroups  Transactions of the American Mathematical Society.

• Araújo, João; Cameron, P. J.; Hulpke, A.; Lopes,P. (2017) Imprimitive Permutations in Primitive Groups  Journal of Algebra: 486, 396-416.

• Branco, Mário J. J.; Gomes, Gracinda M. S.; Silva, Pedro V.  (2017) Takahasi semigroups Forum Mathematicum: 29(5), 1145-1161.

• Soares, Filipa; Silva, Pedro V. (2016) Howson's Property for Semidirect Products of Semilattices by Groups Communications in Algebra: 44, 2482-2494.

• Araújo, João; Bentz, Wolfram; Cameron, P. J.; Gordon Royle; Artur Schaefer (2016) Primitive Groups, Graph Endomorphisms and Synchronization Proceedings of the London Mathematical Society: 113, 829--867.

• Cameron, P. J.; Sebastian M. Cioaba (2015) A graph partition problem American Mathematical Monthly: 122, 972-983.

• Araújo, João; Kinyon, M. (2015) A natural characterization of semilattices of rectangular bands and groups of exponent two Semigroup Forum: 91, 295-298.

• Drapal, A.; Kinyon, M. (2015) Buchsteiner loops: associators and constructions Algebra and its Applications: 14(4), 1550050.

• Kinyon, M.; J. Leech; J. Pita Costa (2015) Distributivity in skew lattices Semigroup Forum: 91, 378-400.

• Branco, Mário J. J.; Gomes, Gracinda M. S.; Gould, Victoria (2015) Ehresmann monoids J. Algebra: 443, 349–382.

• Kinyon, M.; I. Wanless (2015) Loops with exponent 3 in all isotopes International Journal of Algebra and Computation: 25(7), 1159-1177.

• László Babai; Cameron, P. J. (2015) Most primitive groups are full automorphism groups of edge-transitive hypergraphs Journal of Algebra: 421, 512--523.

• Cameron, P. J.; Pablo Spiga (2015) Most switching classes with primitive automorphism groups contain graphs with trivial groups Australasian J. Combinatorics: 62, 76-90.

• Gomes, Gracinda M. S.; Santa-Clara, Catarina; Soares, Filipa (2015) The semigroup ring of a restriction semigroup with an inverse skeleton Semigroup Forum: 90 (2015), no. 2, 449–474.

• Araújo, João; Kinyon, M. (2014) Inverse semigroups with idempotent-fixing automorphisms Semigroup Forum: 89(2), 469-474.

• Gomes, Gracinda M. S.; Ruskuc, Nik (2014) John Macintosh Howie: Work and Legacy Semigroup Forum: 89(1), 2-19.

• Bentz, Wolfram; Sequeira, Luís (2014) Taylor's modularity conjecture holds for linear idempotent varieties Algebra Universalis: 71(2), 101-107.

• Araújo, João; Kinyon, M.; Malheiro, António (2013) A characterization of adequate semigroups by forbidden subsemigroups Proceedings of the Royal Society of Edinburgh Series A: 143(6), 1115-1122.

• Araújo, João; Kinyon, M. (2012) Axioms for Unary Semigroups Via Division Operations Communications in Algebra: 40(2), 719-737.

• Jedlicka, P.; Kinyon, M.; Vojtechovsky, P. (2012) Nilpotency in automorphic loops of prime power order Journal of Algebra: 360(1), 64-76.

• Araújo, João; Kinyon, M. (2012) On a Problem of M. Kambites Regarding Abundant Semigroups  Communications in Algebra: 40(12), 4439–4447.

• Araújo, João; Kinyon, M. (2011) An Elegant 3-Basis for Inverse Semigroups Semigroup Forum: 82(2), 319-323.

• Araújo, João; Kinyon, M. (2011) Independent axiom systems for nearlattices Czechoslovak Mathematical Journal: 61(4), 975-992.

• Branco, Mário J. J.; Gomes, Gracinda M. S.; Gould, Victoria (2011) Left adequate and left Ehresmann monoids  International Journal of Algebra and Computation: 21(7), 1259-1284.

• Gomes, Gracinda M. S.; Gould, Victoria (2011) Left adequate and left Ehresmann monoids II Journal of Algebra: 348(1), 171-195.

• Araújo, João; Kinyon, M.; Konieczny, J. (2011) Minimal Paths in the Commuting Graphs of Semigroups  European Journal of Combinatorics: 32, 178-197.

• Fernandes, Vítor Hugo; Gomes, Gracinda M. S.; Jesus, Manuel M. (2011) The cardinal and the idempotent number of various monoids of transformations on a finite chain Bulletin of the Malaysian Mathematical Sciences Society: 34(1), 79–85.

• Jedlicka, P.; Kinyon, M.; Vojtechovsky, P. (2011) The structure of commutative automorphic loops Transactions of the American Mathematical Society: 363(1), 365-384.

• McAlister, D. B.; Soares, Filipa (2011) Tiling semigroups of n-dimensional hypercubic tilings Communications in Algebra: 39(6), 2002-2023.

• Iglésias, Laura; Santa-Clara, Catarina; Silva, Fernando C. (2011) Unified Min-Max and Interlacing Theorems for Linear Operators Linear and Multilinear Algebra: 59(6), 651-669.

• Branco, Mário J. J.; Gould, Victoria; Gomes, Gracinda M. S. (2010) Extensions and covers for semigroups whose idempotents form a left regular band Semigroup Forum: 81, 51-70.

• Fernandes, Vítor Hugo; Gomes, Gracinda M. S.; Jesus, Manuel M. (2009) Congruences on monoids of transformations preserving the orientation on a finite chain Journal of Algebra: 321(3), 743–757.

• Branco, Mário J. J.; Pin, J.-E. (2009) Equations defining the polynomial closure of a lattice of regular languages Lecture Notes in Computer Science: 5556, 115-126.

• Mermut, Engin; Santa-Clara, Catarina; Smith, Patrick F. (2009) Injectivity Relative to Closed Submodules Journal of Algebra: 321(2), 548-557.

• Fountain, John; Gomes, Gracinda M. S.; Gould, Victoria (2009) Membership of AvG for classes of finite weakly abundant semigroups Periodica Mathematica Hungarica: 59(1), 9-36.

• Soares, Filipa; McAlister, D. B. (2009) One-dimensional tiling semigroups and factorial languages Communications in Algebra: 37(1), 276-295.

• Fountain, John; Gomes, Gracinda M. S.; Gould, Victoria (2009) The free ample monoid International Journal of Algebra and Computation: 19(4), 527-554.

• Branco, Mário J. J.; Gomes, Gracinda M. S. (2009) The generalized Szendrei expansion of an R-unipotent semigroup Acta Mathematica Hungarica: 123(1-2), 11-26.

• Gomes, Gracinda M. S.; Gould, Victoria (2008) Fundamental semigroups having a band of idempotents Semigroup Forum: 77, 279-299.

• Kinyon, M.; Phillips, J. D.; Vojtechovsky, P. (2008) When is the commutant of a Bol loop a subloop? Transactions of the American Mathematical Society: 360(5), 2393-2408.

• Gomes, Gracinda M. S.; Maria B. Szendrei (2007) Almost factorizable weakly ample semigroups Communications in Algebra: 35 (11), 3503-3523.

• Branco, Mário J. J. (2007) Deterministic concatenation product of languages recognized by finite idempotent monoids Semigroup Forum: 74, n. 3, 379-409.

• Gomes, Gracinda M. S.; Szendrei, Maria B. (2007) Even covers of left ample semigroups Semigroup Forum: 74(2), 293-305.

• Fountain, John B.; Gomes, Gracinda M. S. (2006) Finite abundant semigroups in which the idempotents form a subsemigroup Journal of Algebra: 295, 303-313.

• Gomes, Gracinda M. S.; Pin, J.-E.; Sezinando, Helena (2006) Presentations of the Schützenberger product of n groups Communications in Algebra: 34 (4), 1213-1235.