The real genus of the alternating groups - Etayo Gordejuela, José Javier; Martínez García, Ernesto (Revista matemática iberoamericana, 2008)

On the connectedness of the branch loci of non-orientable unbordered klein surfaces of low genus - Bujalance, E.; Etayo, J.J.; Martínez, E.; Szepietowski, B. (Glasgow Mathematical Journal, 2015)

Automorphism groups of compact non-orientable riemann surfaces - Bujalance, E.; Cirre, F.J.; Etayo, J.J.; Gromadzki, G.; Martínez, E. (Groups St Andrews 2013, 2015)

The symmetric crosscap number of the groups of small-order - Etayo, J.J.; Martínez, E. (Journal of Algebra and its Applications, 2013)

On Real Forms of Belyi Surfaces With Symmetric Groups of Automorphisms - Etayo, J.J.; Gromadzki, G.; Martínez, E. (Mediterranean Journal of Mathematics, 2012)

Alternating groups as automorphism groups of riemann surfaces - Etayo Gordejuela, J.J.; Martínez, E. (International Journal of Algebra and Computation, 2006)

Alternating groups, Hurwitz groups and H*-groups - Etayo Gordejuela, J.J.; Martínez, E. (Journal of Algebra, 2005)

Fuchsian groups generated by half-turns and geometrical characterization of hyperelliptic and symmetric Riemann surfaces - Etayo, J.J.; Martínez, E. (Mathematica Scandinavica, 2004)

Agent-Based Generative Simulation of an Intelligent Distributed Scheduling World with Netlogo - Rolon, Milagros; Canavesio, Mercedes; Martinez, Ernesto (Ciencia y tecnología, 2009)

Cyclic trigonal klein surfaces - Bujalance, E.; Bujalance, J.A.; Gromadzki, G.; Martinez, E. (Journal of Algebra, 1993)

On hyperbolic right-angled polygons - Costa, A.F.; Martínez, E. (Geometriae Dedicata, 1995)

A remark on nec groups representing surfaces with boundary - Bujalance, E.; Martinez, E. (Bulletin of the London Mathematical Society, 1989)

Automorphism groups of q-trigonal planar Klein surfaces and maximal surfaces - Estrada, B.; Martínez, E. (Journal of the Mathematical Society of Japan, 2009)

On q-n-gonal Klein surfaces - Estrada, B.; Hidalgo, R.A.; Martínez, E. (Acta Mathematica Sinica, English Series, 2007)

Coordinates for the Teichmüller space of planar surface N.E.C. groups - Estrada, B.; Martínez, E. (International Journal of Mathematics, 2003)

q-trigonal Klein surfaces - Estrada, B.; Martínez, E. (Israel Journal of Mathematics, 2002)

On q-hyperelliptic k-bordered tori - Estrada, B.; Martínez, E. (Glasgow Mathematical Journal, 2001)

The real genus of cyclic by dihedral and dihedral by dihedral groups - Etayo Gordejuela, J.J.; Martínez, E. (Journal of Algebra, 2006)

On Oikawa's theorem from an algebraic and geometric point of view - Gromadzki, G.; Martínez, E.; Mockiewicz, B. (Archiv der Mathematik, 2003)

Convex fundamental regions for N. E. C. groups - Martinez, E. (Archiv der Mathematik, 1986)

The action of the groups Dm × Dn on unbordered Klein surfaces - Gordejuela, J.J.E.; Martínez, E. (Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas ( RACSAM ), 2011)

Cyclic and dihedral actions on Klein surfaces with 2 boundary components - Bujalance, E.; Etayo, J.J.; Martínez, E. (Contemporary Mathematics, 2022)

Groups of automorphisms of bordered non-orientable Klein surfaces of topological genus 3 - Bujalance, E.; Etayo, J.J.; Martínez, E. (Topology and its Applications, 2023)

Groups of automorphisms of order 4g acting on non-orientable Riemann surfaces of topological genus g. - Bujalance,E.; Etayo,J.J.; Martínez,E. (Geometriae Dedicata, 2025)

Comparing the real genus and the symmetric crosscap number of a group - Bacelo,A.; Etayo,J.J.; Martínez,E. (Cubo, 2025)