J. Delgado, E. A. Lacomba, J. Llibre, E. Pérez-Chavela.
Poincaré compactification of the Kepler and the collinear three-body problems.
In Seminar on Dynamical Systems (St. Petersburg, 1991), 117-128. Birkhauser, Basel, 1994.
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X. Jarque, J. Llibre.
Structural stability of planar Hamiltonian polynomial vector fields.
Proc. Lond. Math. Soc. (3), 68(3), 617-640. 1994. [DOI]
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J. Llibre, A. Nunes.
Separatrix surfaces and invariant manifolds of a class of integrable Hamiltonian systems and their perturbations.
Mem. Amer. Math. Soc., 107(513), viii+191. 1994.
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J. Llibre, J. Paraños, J. Á. Rodríguez.
The full periodicity kernel for $\sigma$ maps.
J. Math. Anal. Appl., 183(3), 639-651. 1994.
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J. Llibre, A. Sá.
Periods for continuous self-maps of a bouquet of circles.
C. R. Acad. Sci. Paris Ser. I Math., 318(11), 1035-1040. 1994.
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J. Llibre, J. Soler.
An analytic estimation for the instability interval near second order resonances in the restricted three-body problem.
Z. Angew. Math. Phys., 45(6), 956-977. 1994.
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V. Mañosa.
Lyapunov and period constants for vector fields on the plane.
Masters thesis, Universitat Autònoma de Barcelona, 1994. (In Catalan)
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R. Prohens.
Periodic orbits on the plane for a polynomial and piecewise polynomial vector fiels.
PhD thesis, Universitat Autònoma de Barcelona, 1994.
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A. Sá.
Conjunto minimal de períodos de uma funçao contínua num bouquet de n cirfunferencias.
PhD thesis, Universitat Autònoma de Barcelona, 1994.

Ll. Alsedà, S. L. Baldwin, J. Llibre, R. Swanson, W. Szlenk.
Torus maps and Nielsen numbers.
In Nielsen theory and dynamical systems (South Hadley, MA, 1992), 1-7. Amer. Math. Soc., Providence RI, 1993.
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Ll. Alsedà, V. Fedorenko.
Simple and complex dynamics for circle maps.
Publ. Mat., 37(2), 305-316. 1993.
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Ll. Alsedà, S. F. Kolyada, L. Snoha.
On topological entropy of triangular maps of the square.
Bull. Austral. Math. Soc., 48(1), 55-67. 1993.
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Ll. Alsedà, J. Llibre.
Periods for triangular maps.
Bull. Austral. Math. Soc., 47(1), 41-53. 1993.
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Ll. Alsedà, J. Llibre, M. Misiurewicz.
Combinatorial dynamics and entropy in dimension one. First Edition.
World Scientific Publishing Co. Inc., River Edge NJ, 1993.
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Ll. Alsedà, F. Mañosas, W. Szlenk.
A characterization of the uniquely ergodic endomorphisms of the circle.
Proc. Amer. Math. Soc., 117(3), 711-714. 1993.
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Ll. Alsedà, S. B. Miled, J. Gambaudo, P. Mumbrú.
Asymptotic linking of periodic orbits for diffeomorphisms of the two-disk.
Nonlinearity, 6(5), 653-663. 1993.
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Ll. Alsedà, J. M. Moreno.
Linear orderings and the full periodicity kernel for the n-star.
J. Math. Anal. Appl., 180(2), 599-616. 1993.
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Ll. Alsedà, X. D. Ye.
Division for star maps with the branching point fixed.
Acta Math. Univ. Comenian. (N.S.), 62(2), 237-248. 1993.
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J. Casasayas, J. Llibre, A. Nunes.
Lefschetz zeta functions and forced set of periods.
In Nielsen theory and dynamical systems (South Hadley, MA, 1992), 23-32. Amer. Math. Soc., Providence RI, 1993.
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J. Chavarriga, J. Giné.
Polynomial solutions of systems in the plane with a center-type linear part.
In XIII CEDYA/III Congress on Applied Mathematics (Madrid, 1993), 684-689. Univ. Politéc. Madrid, Madrid, 1993.