J. Llibre, M. Mousavi, A. Nabavi.
New family of centers of planar polynomial differential systems of arbitrary even degree.
J. Dyn. Control Syst., 25, 619-630. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, R. D. S. Oliveira, C. Valls.
Final evolutions for simplified multistrain/two-stream model for tuberculosis and dengue fever.
Chaos Solitons Fractals, 118, 181-186. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, E. Ponce, C. Valls.
Two limit cycles in Liénard piecewise linear differential systems.
J. Nonlinear Sci., 29, 1499-1522. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, R. O. Ramírez, V. Ramírez.
An inverse approach to the center problem.
Rend. Circ. Mat. Palermo (2), 68, 29-64. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, R. O. Ramírez, V. Ramírez.
Center problem for $\lambda$-$\Omega$ differential systems.
J. Differential Equations, 267, 6409-6446. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, T. Salhi.
The limit cycles of a class of quintic polynomial vector fields.
Topol. Methods Nonlinear Anal., 54(2), 141-151. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, T. Salhi.
On the limit cycles surrounding a diagonalizable linear node with homogeneous nonlinearities.
Appl. Math. Lett., 98, 427-431. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, V. F. Sirvent.
On topological entropy, Lefschetz numbers and Lefschetz zeta functions.
Topology Appl., 268(106906), 1-14. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, Y. Tang.
Limit cycles of discontinuous piecewise quadratic and cubic polynomial perturbations of a linear center.
Discrete Contin. Dyn. Syst. Ser. B, 24(4), 1769-1784. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
Integrability of reversible and equivariant quadratic polynomial differential systems in the plane.
Rocky Mountain J. Math., 49(2), 579-591. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
Periodic orbits of the planar anisotropic generalized Kepler problem.
J. Math. Phys., 60, 042901. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
Global dynamics of the integrable Armbruster-Guckenheimer-Kim galactic potential.
Astrophys. Space Sci., 364(130), 1-6. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Valls.
On the dynamics of the Szekeres system.
Phys. Lett. A, 383(4), 301-305. 2019. [DOI]
PreprintAbstract

J. Llibre, C. Vidal.
Periodic motion in non-axially symmetric galaxies.
J. Geom. Phys., 140, 1-9. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, P. Yuan.
Bicentric quadrilateral central configurations.
Appl. Math. Comput., 362, 124507: 1-7. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, P. Yuan.
Periodic orbits of the planar anisotropic Manev problem and of the perturbed hydrogen atom problem.
Qual. Theory Dyn. Syst., 18, 969-986. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, X. Zhang.
The non-existence, existence and uniqueness of limit cycles for quadratic polynomial differential systems.
Proc. Roy. Soc. Edinburgh Sect. A, 149(1-14), . 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, X. Zhang.
Limit cycles for discontinuous planar piecewise linear differential systems separated by an algebraic curve.
Internat. J. Bifur. Chaos Appl. Sci. Engrg., 29(2), 1950017 (17 pages). 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, X. Zhang.
Limit cycles created by piecewise linear centers.
Chaos, 29(5), 053116:1-14. 2019. [DOI]
PreprintAbstractPreprint at DDDUAB

J. M. Mondelo.
Computing invariant manifolds for libration point missions.
In Satellite dynamics and space missions, 159-223. Springer, Cham, 2019.
PreprintAbstractPreprint at DDDUAB