Artigos em Revistas Internacionais

• Berman, Joel; Bordalo, Gabriela Hauser (2002) Irreducible elements and uniquely generated algebras Discrete Mathematics: 245, 63-79.

• Araújo, João; Konieczny, Janusz (2002) Molaei's Generalized Groups are Completely Simple Semigroups Bul. Inst. Politeh. Jassy, Sect. I. Mat. Mec. Teor. Fiz.: 48 (52) no. 1-2, 1-5.

• Araújo, João (2002) Normal Semigroups of Endomorphisms of Proper Independence Algebras are Idempotent Generated Proc. Edinburgh Math. Soc.: 45, 205-217.

• Araújo, João (2002) On Idempotent Generated Semigroups Semigroup Forum: 65, 138-140.

• Gouveia, M. J.; (previously Saramago, M. J.); Priestley, H. A. (2002) Optimal natural dualities: the structure of failsets Internat. J. Algebra and Computation: 12 (3), 407-436.

• Bordalo, Gabriela Hauser; Monjardet, B. (2002) The lattice of strict completions of a finite poset Algebra Universalis: 47, 183-200.

• Gomes, Gracinda M. S.; Gould, Victoria (2001) Fundamental Ehresmann Semigroups Semigroup Forum: 63 (1), 11-33.

• Araújo, Isabel M.; Branco, Mário J. J.; Fernandes, Vítor Hugo; Gomes, Gracinda M. S.; Ruskuc, N. (2001) On generators and relations for unions of semigroups Semigroup Forum: 63 (1), 49-62.

• Gomes, Gracinda M. S.; Gould, Victoria (2000) Graph expansions of unipotent monoids Comm. Algebra: 28 (1), 447-463.

• Santa-Clara, Catarina; Smith, Patrick F. (2000) Modules which are self-injective relative to closed submodules Contemp. Math.: 259, 487-499.

• Giraldes, Emília; Gomes, Gracinda M. S.; McAlister, D. B. (2000) On a class of lattice ordered inverse semigroups J. Algebra: 230, 496-517.

• Fountain, John; Gomes, Gracinda M. S. (2000) Primitive inverse congruences on categorical semigroups Proc. Edinburgh Math. Soc.: 43, 395-413.

• Araújo, João; Silva, F. C. (2000) Semigroups of linear endomorphisms closed under conjugation Comm. Algebra: 28 (8), 3679-3689.

• Gouveia, M. J.; (previously Saramago, M. J.) (2000) Some remarks on dualisability and endodualisability Algebra Universalis: 43, 197-212.

• Fountain, John; Gomes, Gracinda M. S.; Gould, Victoria (1999) A Munn type representation for a class of E-semiadequate semigroups J. Algebra: 218, 693-714.

• Fountain, John; Gomes, Gracinda M. S.; Gould, Victoria (1999) Enlargements, semiabundancy and unipotent monoids Comm. Algebra: 27 (2), 595-614.

• Bentz, Wolfram; Bulman-Fleming, Sydney (1999) On Equalizer-flat Acts Semigroup Forum: 58, 5 – 16.

• Gomes, Gracinda M. S.; Gould, Victoria (1999) Proper weakly left ample semigroups Internat. J. Algebra Comput.: 9 (6), 721-739.

• Bentz, Wolfram (1999) Topological Implications in Varieties Algebra Universalis: 42, 9 – 16.

• Galvão, M. Luísa; Smith, Patrick F. (1998) Chain Conditions in Modular Lattices Colloquium Mathematicum: 76 (1), 85-98.

• Bordalo, Gabriela Hauser; Rodrigues, Elias (1998) Complements in modular and semimodular lattices Portugaliae Math.: 55 (3), 373-380.

• Santa-Clara, Catarina (1998) Extending modules with injective or semisimple summands J. Pure Applied Algebra: 127, 193-203.

• Berman, Joel; Bordalo, Gabriela Hauser (1998) Finite distributive lattices and doubly irreducible elements Discrete Mathematics: 178, 237-243.

• Gomes, Gracinda M. S.; Szendrei, Mária B. (1998) Idempotent pure extensions of inverse semigroups via quivers J. Pure Applied Algebra: 127, 15-38.

• Santa-Clara, Catarina; Silva, F. C. (1998) On infinite Goldie dimension J. Algebra: 205, 617-625.

• Gouveia, M. J.; (previously Saramago, M. J.) (1998) Optimal natural dualities for some quasivarieties of distributive double p-algebras Acta Math. Univ. Comenianae: 67, 249-272.

• Gomes, Gracinda M. S.; Howie, John M. (1998) Semigroups with zero whose idempotents form a subsemigroup Proc. Royal Soc. Edinburgh: 128A, 265-281.

• Bordalo, Gabriela Hauser; Silva, Ilda P. (1997) A characterization of finite modular pseudocomplemented lattices Discussiones Mathematicae: 17, 113-122.

• Branco, Mário J. J. (1997) The Kernel Category and Variants of the Concatenation Product Internat. J. Algebra Comput.: 7, 487-509.

• Gomes, Gracinda M. S.; Howie, John M. (1996) A P-theorem for inverse semigroups with zero Portugaliae Math.: 53 (3), 257-278.

• Santa-Clara, Catarina; Smith, Patrick F. (1996) Extending modules which are direct sums of injective modules and semisimple modules Comm. Algebra: 24 (11), 3641-3651.

• Bordalo, Gabriela Hauser; Monjardet, B. (1996) Reducible classes of finite lattices Order: 13, 379-390.

• Gomes, Gracinda M. S.; Howie, John M. (1995) Idempotent endomorphisms of an independence algebra of finite rank Proc. Edinb. Math. Soc.: 38, 107-116.

• Branco, Mário J. J. (1994) On the Pin-Thérien Expansion of Idempotent Monoids Semigroup Forum: 49, 329-334.

• Fountain, John; Gomes, Gracinda M. S. (1994) Proper left type-A covers Portugaliae Math.: 51 (4), 305-319.

• Bordalo, Gabriela Hauser; Priestley, H. A. (1994) Rees congruences in lattice-ordered algebras Publ. Math. Debrecen: 49, 355-364.

• Bordalo, Gabriela Hauser; Priestley, H. A. (1994) Series-Parallel posets and relative Ockham lattices Order: 11, 281-305.

• Gomes, Gracinda M. S. (1993) A characterisation of the group congruences on a semigroup Semigroup Forum: 46, 48-53.

• Fountain, J.B.; Gomes, Gracinda M. S. (1993) Proper left type-A monoids revisited Glasgow Math. J.: 35, 293-306.

• Gomes, Gracinda M. S. (1992) Group congruences on eventually inverse semigroup Portugal. Math.: 49 (4), 417-428.

• Fountain, J.B.; Gomes, Gracinda M. S. (1992) Left proper E-dense monoids J. Pure Appl. Algebra: 80, 1-27.

• Gomes, Gracinda M. S.; Howie, J.M. (1992) On the ranks of certain semigroups of order-preserving transformations Semigroup Forum: 45, 272-282.

• Fountain, J.B.; Gomes, Gracinda M. S. (1990) The Szendrei expansion of a semigroup Mathematika: 37, 251-260.

• Gomes, Gracinda M. S. (1988) Orthodox congruences on regular semigroups Semigroup Forum: 37, 149-166.

• Gomes, Gracinda M. S.; Howie, J.M. (1987) Nilpotents in finite symmetric inverse semigroups Proc. Edinburgh Math. Soc.: 30, 383-395.

• Gomes, Gracinda M. S.; Howie, J.M. (1987) On the ranks of certain finite semigroups of transformations Math. Proc. Cambridge Philos. Soc.: 101, 395-403.

• Gomes, Gracinda M. S. (1986) Some results on congruences on R-unipotent semigroups Semigroup Forum: 33, 175-185.

• Gomes, Gracinda M. S. (1986) The lattice of R-unipotent congruences on a regular semigroup Semigroup Forum: 33, 159-173.

• Gomes, Gracinda M. S. (1985) R-unipotent congruences on regular semigroups Semigroup Forum: 31, 265-280.

• Gomes, Gracinda M. S. (1983)  On left quasinormal orthodox semigroups Proc. Roy. Soc. Edinburgh: 95A, 59-71.