Publications
Degenerate Hopf bifurcation and nerve impulse. SIAM J. Math. Anal.. 1985;16:1121-1133.
Degenerate Hopf bifurcation and nerve impulse. II. SIAM J. Math. Anal.. 1989;20:1-12.
Degenerate Hopf bifurcation formulas and Hilbert's 16th problem. SIAM J. Math. Anal.. 1989;20:13-30.Edit
On direct product decompositions of finite $\scr J$-trivial semigroups. Internat. J. Algebra Comput.. 1991;1:329-337.Edit
The double Mellin-Barnes type integrals and their applications to convolution theory. Vol 6 World Scientific Publishing Co., Inc., River Edge, NJ 1992.Edit
A Discrete Time versus a Continuous Time Filter. In: Actas do Controlo’94.; 1994. 8. p. 83-85p. Edit
Discrete time piecewise linear filtering with small observation noise. IEEE Transactions on Automatic Control. 1995;40:2149-2152.Edit
The disappearance of the limit cycle in a mode interaction problem with $Z_2$ symmetry. Nonlinearity. 1997;10:425-432.
Degeneracy of some Lie algebras Univ. Coimbra, Coimbra 1999.Edit
Degeneracy of some Lie algebras. In: Summer School on Differential Geometry (Coimbra, 1999). Univ. Coimbra, Coimbra; 1999. 9. p. 91-98p. Edit
On directly infinite rings. Acta Math. Hungar.. 1999;85:153-165.Edit
On the decidability of iterated semidirect products with applications to complexity. Proc. London Math. Soc. (3). 2000;80:50-74.Edit
Down-up algebras and their representation theory. J. Algebra. 2000;228:286-310.Edit
Dynamics of finite semigroups. In: Semigroups, algorithms, automata and languages (Coimbra, 2001). World Sci. Publ., River Edge, NJ; 2002. 2. p. 269-292p. Edit
Dynamics of implicit operations and tameness of pseudovarieties of groups. Trans. Amer. Math. Soc.. 2002;354:387-411 (electronic).Edit
[2004-8] Dynamics near a heteroclinic network .
dAMUSE - A new tool for denoising and blind source separation. {DIGITAL SIGNAL PROCESSING}. 2005;{15}:{400-421}.Edit
Dicionário de Matemática Elementar, de Stella Baruk. Vol 2 Edições Afrontamento 2005.Edit
Dynamics near a heteroclinic network. Nonlinearity. 2005;18:391-414.
Dynamics near a Heteroclinic network. Nonlinearity. 2005;18:391-414.