Tome A., Teixeira A., Lang EW, Stadlthanner K, Rocha AP, Almeida R. Blind source separation using time-delayed signals. In: {IEEE International Joint Conference on Neural Networks (IJCNN)}. Vol {3}. {IEEE}; 2004. {. {p. 2187-2191p. }.Edit

da Costa JF, Rao P.. Central partition for a partition-distance and strong pattern graph. REVSTAT. 2004;2:127-143.Edit

[2004-22] Pinto CA, Golubitsky M. Central Pattern Generators for Bipedal Locomotion .Edit

Hunziker M, Machiavelo A, Park J. Chebyshev polynomials over finite fields and reversibility of σ-automata on square grids. Theoret. Comput. Sci.. 2004;320:465-483.Edit

[2004-42] Rocha F, Basto-Gonçalves J. Classification of linear differential equations near infinity .Edit

[2004-23] Freitas JM. Continuity of SRB measure and entropy for Benedicks-Carleson quadratic maps .

[2004-12] Alves JF, Oliveira K, Tahzibi A. On the continuity of the SRB entropy for endomorphisms .Edit

[2004-8] Aguiar MA, Castro SB, Labouriau IS. Dynamics near a heteroclinic network .

Matos J., Gama SM, Ryskin H., Duarte J.. An econophysics approach to the Portuguese Stock Index – PSI-20. Physica A. 2004;342:665-676.Edit

[2004-1] Matos J., Gama SM, Ruskin HJ, Duarte JA. An Econophysics Approach to the Portuguese Stock Index - PSI-20 .Edit

Almeida J, Zeitoun M. The equational theory of ω-terms for finite $\scr R$-trivial semigroups. In: Semigroups and languages. World Sci. Publ., River Edge, NJ; 2004. 1. p. 1-22p. Edit

Rosales J., García-Sánchez PA, García-García JI. Every positive integer is the Frobenius number of a numerical semigroup with three generators. Math. Scand.. 2004;94:5-12.Edit

García-Sánchez PA, Rosales JC. Every positive integer is the Frobenius number of an irreducible numerical semigroup with at most four generators. Ark. Mat.. 2004;42:301-306.Edit

[2004-33] Smirnov GV. On the existence in a problem of the calculus of variations without convexity assumptions .Edit

[2004-30] Antoneli F, Dias AP, Golubitsky M, Wang Y. Flow Invariant Subspaces for Lattice Dynamical Systems .Edit

Silva MC, Duarte AL, de Sá CC. Francisco Gomes Teixeira. CIM Bulletin. 2004;16:21-23.Edit

Silva PV. Free group languages: rational versus recognizable. Theor. Inform. Appl.. 2004;38:49-67.

Matos J., da Rocha Z.. Frobenius-Padé approximants for d-orthogonal series: Theory and computational aspects. Applied Numerical Mathematics. 2004;52:89-112.Edit

[2004-15] Matos JM, Rocha Z. Frobenius-Padé approximants for d-orthogonal series: theory and computational aspects .

Rosales J., García-Sánchez PA, García-García JI, Madrid J.. Fundamental gaps in numerical semigroups. J. Pure Appl. Algebra. 2004;189:301-313.Edit

Rosales J., García-Sánchez PA, García-García JI, Madrid J.. Fundamental gaps in numerical semigroups with respect to their multiplicity. Acta Math. Sin. (Engl. Ser.). 2004;20:629-646.Edit

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

[2004-39] Basto-Gonçalves J, Reis H.. The geometry of quadratic 2x2 systems of conservation laws .Edit

[2004-18] Almeida J, Escada AP. The globals of pseudovarieties of ordered semigroups containing $B_2$ and an application to a proble .Edit

Almeida J, Escada AP. The globals of some subpseudovarieties of DA. Internat. J. Algebra Comput.. 2004;14:525-549.Edit