J. M. Moreno.
Periodic orbits and entropy for maps of the n-star.
PhD thesis, Universitat Autònoma de Barcelona, Bellaterra, November, 1992.
Abstract

Ll. Alsedà, F. Mañosas.
Monotonicity of the entropy for a family of circle maps.
In European Conference on Iteration Theory (Batschuns, 1989), 1-5. World Sci. Publishing, River Edge NJ, 1991.
Abstract

Ll. Alsedà, J. M. Moreno.
Lower bounds of the topological entropy of maps of Y.
J. Math. Anal. Appl., 155(2), 513-530. 1991. [DOI]
Abstract

J. M. Cors.
Study of the hill problem as a polynomial vector field.
Masters thesis, Universitat Autònoma de Barcelona, Bellaterra, September, 1991. (In Catalan)
Abstract

J. Franks, J. Llibre.
Periods of surface homeomorphisms.
In Continuum theory and dynamical systems (Arcata, CA, 1989), 63-77. Amer. Math. Soc., Providence RI, 1991. [DOI]
Abstract

A. Gasull, G. Guasp, A. Guillamon.
Applications of Riemannian metrics to systems of planar differential equations.
In XII CEDYA/II Congress on Applied Mathematics (Oviedo, 1991), 129-134. Univ. Oviedo, Oviedo, 1991.
Abstract

A. Gasull, J. Llibre, J. Sotomayor.
Global asymptotic stability of differential equations in the plane.
J. Differential Equations, 91(2), 327-335. 1991. [DOI]
AbstractFull PDF

J. Guaschi, J. Llibre, R. S. MacKay.
A classification of braid types for periodic orbits of diffeomorphisms of surfaces of genus one with topological entropy zero.
Publ. Mat., 35(2), 543-558. 1991. [DOI]
Abstract

E. A. Lacomba, J. Llibre, A. Nunes.
Invariant tori and cylinders for a class of perturbed Hamiltonian systems.
In The geometry of Hamiltonian systems (Berkeley, CA, 1989), 373-385. Springer, New York, 1991. [DOI]
Abstract

J. Llibre.
Bounded polynomial vector fields. II.
In XII CEDYA/II Congress on Applied Mathematics (Oviedo, 1991), 49-59. Univ. Oviedo, Oviedo, 1991.
Abstract

J. Llibre.
On the number of central configurations in the n-body problem.
Celestial Mech. Dynam. Astronom., 50(1), 89-96. 1991. [DOI]
Abstract

J. Llibre.
Periodic points of one-dimensional maps.
In European Conference on Iteration Theory (Batschuns, 1989), 194-198. World Sci. Publishing, River Edge NJ, 1991.
Abstract

J. Llibre, R. S. MacKay.
Rotation vectors and entropy for homeomorphisms of the torus isotopic to the identity.
Ergodic Theory Dynam. Systems, 11(1), 115-128. 1991. [DOI]
Abstract

J. Llibre, P. Mumbrú.
Extending the *-product operator.
In European Conference on Iteration Theory (Batschuns, 1989), 199-214. World Sci. Publishing, River Edge NJ, 1991.
Abstract

J. Llibre, P. Mumbrú.
On sizes and shapes of lattice figures.
Internat. J. Math. Ed. Sci. Tech., 22(3), 365-386. 1991. [DOI]
Abstract

A. Nunes, J. Casasayas, J. Llibre.
A perturbation of the relativistic Kepler problem.
In Predictability, stability, and chaos in n-body dynamical systems (Cortina d'Ampezzo, 1990), 547-554. Plenum, New York, 1991.
Abstract

Ll. Alsedà, F. Mañosas.
Kneading theory and rotation intervals for a class of circle maps of degree one.
Nonlinearity, 3(2), 413-452. 1990.
Abstract

C. Alsina, J. Llibre.
On the length, area and volume of lattice figures.
Rad. Mat., 6(1), 177-180. 1990.
Abstract

J. C. Artés.
Quadratic differential systems.
PhD thesis, Universitat Autònoma de Barcelona, 1990.
Abstract

A. Cima, J. Llibre.
Algebraic and topological classification of the homogeneous cubic vector fields in the plane.
J. Math. Anal. Appl., 147(2), 420-448. 1990. [DOI]
Abstract