Publications
Limit cycles for a class of Z_2n-equivariant systems without infinite equilibria. Electronic Journal of Differential Equations. 2016;122:1-12.Edit
Singularities of equations of Hodgkin-Huxley type. Dynam. Stability Systems. 1996;11:91-108.Edit
Degenerate Hopf bifurcation and nerve impulse. SIAM J. Math. Anal.. 1985;16:1121-1133.
[2012-11] Global Generic Dynamics Close to Symmetry .Edit
[2015-10] Global bifurcations close to symmetry .Edit
Symmetries of projected wallpaper patterns. Math. Proc. Cambridge Philos. Soc.. 2006;141:421-441.Edit
Global bifurcations close to symmetry. Journal of Mathematical Analysis and Applications. 2016;444(1):648-671.Edit
Global generic dynamics close to symmetry. J. Differential Equations. 2012;253:2527-2557.Edit
The Arrhenius plot of a physiological rate process is never linear. Ciência e Cultura. 1991;43(5):363-369.Edit
[2005-11] Projected Wallpaper Patterns .Edit
Confirming the diagnosis of tuberculosis in children in Northern Portugal. International Journal of Tuberculosis and Lung Disease. 2014;18:531-533+i.Edit
The generalized conjugacy problem for virtually free groups. Forum Math.. 2011;23:447-482.Edit
Bounding the gap between a free group (outer) automorphism and its inverse. Collect. Math.. 2016;67(3):329-346.Edit
COVARIANCE DENSITY-ESTIMATION FOR AUTOREGRESSIVE SPECTRAL MODELING OF POINT-PROCESSES. {BIOLOGICAL CYBERNETICS}. 1989;{61}:{195-203}.Edit
Deformation theory and finite simple quotients of triangle groups I. Journal of the European Mathematical Society. 2014;16(7):1349-1375.Edit
Deformation theory and finite simple quotients of triangle groups II. Groups, Geometry, and Dynamics. 2014;8(3):811-836.Edit
Automorphisms and derivations of $U_q(\germ s\germ l^+_4)$. J. Pure Appl. Algebra. 2007;211:249-264.Edit
Classification of factorial generalized down-up algebras. J. Algebra. 2013;396:184-206.Edit
Automorphisms and derivations of $U_q(\mathfraksl^+_4)$. Journal of Pure and Applied Algebra. 2007;211:249-264.Edit
Modeling Volatility in Heat Rate Variability. In: 38Th Annual International Conference of the Ieee Engineering in Medicine and Biology Society, Embc 2016, Orlando, Fl, Usa, August 16-20, 2016. Ieee; 2016. 3. p. 3582-3585p. (Embc).
Long-Range Dependence in Heart Rate Variability Data: ARFIMA Modelling vs Detrended Fluctuation Analysis. In: {34th Annual Conference on Computers in Cardiology}. Vol {34}. {IEEE}; 2007. {. {p. 21-24p. }.Edit
Modelling long-term heart rate variability: an ARFIMA approach. {BIOMEDIZINISCHE TECHNIK}. 2006;{51}:{215-219}.Edit