Ll. Alsedà, J. Llibre, F. Mañosas, M. Misiurewicz.
Lower bounds of the topological entropy for continuous maps of the circle of degree one.
Nonlinearity, 1(3), 463-479. 1988.
Abstract

M. Carbonell, J. Llibre.
Limit cycles of a class of polynomial systems.
Proc. Roy. Soc. Edinburgh Sect. A, 109(01/02/09), 187-199. 1988.
Abstract

A. Chenciner, J. Llibre.
A note on the existence of invariant punctured tori in the planar circular restricted three-body problem.
Ergodic Theory Dynam. Systems, 8^*, 63-72. 1988. (Charles Conley Memorial Issue)
Abstract

B. Coll, A. Gasull, J. Llibre.
Quadratic systems with a unique finite rest point.
Publ. Mat., 32(2), 199-259. 1988.
Abstract

A. Gasull.
Sobre la ley de Titius-Bode.
Bol. Soc. Ast. Barberà del Vallès, 1-5. 1988.
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A. Gasull, J. Llibre.
On the nonsingular quadratic differential equations in the plane.
Proc. Amer. Math. Soc., 104(3), 793-794. 1988.
Abstract

G. Gómez, J. Llibre, J. Masdemont.
Homoclinic and heteroclinic solutions in the restricted three-body problem.
Celestial Mech., 44(3), 239-259. 1988.
Abstract

E. A. Lacomba, J. Llibre.
Transversal ejection-collision orbits for the restricted problem and the Hill's problem with applications.
J. Differential Equations, 74(1), 69-85. 1988.
Abstract

C. Simó, R. Martínez, J. Llibre, G. Gómez, W. Flury, J. Rodríguez-Canabal.
Relative motion near the triangular libration points in the Earth-Moon system.
In ESA, ESA Workshop on Optical Interferometry in Space, 157-170. 1988.
Abstract

M. Carbonell.
Contribution to the study of polynomial systems with homogeneous nonlinear part and to the chordal cubic systems.
PhD thesis, Universitat Autònoma de Barcelona, 1987.
Abstract

M. Carbonell, J. Llibre.
Existence and unicity of limit cycles for a class of polynomial differential equations on the plane.
In IX CEDYA (Valladolid, 1986), 117-121. Univ. Valladolid, Valladolid, 1987.
Abstract

A. Chenciner, A. Gasull, J. Llibre.
Une description complète du portrait de phase d'un modèle d'élimination résonante.
C. R. Acad. Sci. Paris Ser. I Math., 305(13), 623-626. 1987.
Abstract

A. Cima.
Indices of polynomial vector fields with applications.
PhD thesis, Universitat Autònoma de Barcelona, 1987.
Abstract

A. Cima, J. Llibre.
A global theorem about the indices of the singularities of a polynomial field on the plane.
In IX CEDYA (Valladolid, 1986), 259-261. Univ. Valladolid, Valladolid, 1987.
Abstract

B. Coll.
Qualitative study of some classes of vector fields on the plane.
PhD thesis, Universitat Autònoma de Barcelona, 1987.
Abstract

B. Coll, A. Gasull, J. Llibre.
Some theorems on the existence, uniqueness, and nonexistence of limit cycles for quadratic systems.
J. Differential Equations, 67(3), 372-399. 1987.
Abstract

B. Coll, J. Llibre.
Singularities on the real plane of an analytic system of order two.
In IX CEDYA (Valladolid, 1986), 135-139. Univ. Valladolid, Valladolid, 1987. (In Spanish)
Abstract

A. Gasull, J. Llibre, J. Sotomayor.
Further considerations on the number of limit cycles of vector fields of the form $X(v)=Av+f(v)Bv$.
J. Differential Equations, 68(1), 36-40. 1987.
Abstract

A. Gasull, J. Llibre, J. Sotomayor.
Limit cycles of vector fields of the form $X(v)=Av+f(v)Bv$.
J. Differential Equations, 67(1), 90-110. 1987.
Abstract

G. Gómez, J. Llibre, R. Martínez, J. Rodríguez-Canabal, C. Simó.
On the optimal station keeping control on Halo orbits.
Acta Astronaut., 15, 391-397. 1987.
Abstract