J. Llibre, Y. P. Martinez-Mancilla, C. Valls.
On the global dynamics of a three-dimensional forced-damped differential system.
J. Nonlinear Math. Phys., 27(3), . 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, Y. P. Martinez-Mancilla, C. Valls.
Limit cycles bifurcating of Kolmogorov systems in $R^2$ and in $R^3$.
Commun. Nonlinear Sci. Numer. Simul., 91, 105401:1-10. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, Y. P. Martinez-Mancilla, C. Valls.
Global dynamics of a Lotka-Volterra system in $R^3$.
J. Nonlinear Math. Phys., 27(3), 509-519. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, Y. P. Martinez-Mancilla, C. Vidal.
Limit cycles of a perturbation of a polynomial Hamiltonian systems of degree 4 symmetric with respect to the origin.
Canad. Math. Bull., 63(3), 547-561. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, L. d. A. S. Menezes.
On the limit cycles of a class of discontinuous piecewise linear differential systems.
Discrete Contin. Dyn. Syst. Ser. B, 25(5), 1835-1858. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, M. Messias, A. C. Reinol.
Zero-Hopf bifurcations in three-dimensional chaotic systems with one stable equilibrium.
Internat. J. Bifur. Chaos Appl. Sci. Engrg., 30(12), 2050189. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, A. Murza, C. Valls.
On a conjecture on the integrability of Liénard systems.
Rend. Circ. Mat. Palermo (2), 69, 209-216. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, A. Nabavi, M. Mousavi.
Limit cycles bifurcating from a family of reversible quadratic centers via averaging theory.
Internat. J. Bifur. Chaos Appl. Sci. Engrg., 30(4), 2050051:1-8. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, D. D. Novaes, C. A. B. Rodrigues.
Bifurcations from families of periodic solutions in piecewise differential systems.
Phys. D, 404, 132342:1-12. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, D. D. Novaes, I. O. Zeli.
Limit cycles of piecewise polynomial perturbations of higher dimensional lineal differential systems.
Rev. Mat. Iberoam., 36(1), . 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, R. D. S. Oliveira, C. A. B. Rodrigues.
Limit cycles for two classes of control piecewise linear differential systems.
Sao Paulo J. Math. Sci., 1-17. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, C. Pantazi.
Qualitative study of a model with Rastall gravity.
Classical Quantum Gravity, 37(24), 245010:1-25. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, W. F. Pereira, C. Pessoa.
Phase portraits of Bernoulli quadratic polynomial differential systems.
Electron. J. Differential Equations, 2020(48), 1-19. 2020.
PreprintAbstractPreprint at DDDUAB

J. Llibre, O. Ramírez.
Gradient systems of harmonic polynomials.
J. Differential Equations, 269, 10073-10084. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, R. O. Ramírez.
Integrability by separation of variables.
Phys. D, 409, 132523:1-22. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, R. O. Ramírez, V. Ramírez.
Integrability of a class of N-dimensional Lotka-Volterra and Kolmogorov systems.
J. Differential Equations, 269, 2503-2531. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, R. O. Ramírez, N. Sadovskaia.
Differential equations with a given set of solutions.
Appl. Math. Comput., 365, 124659:1-20. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, V. F. Sirvent.
Periods of holomorphic maps on compact Riemann surfaces and product of spheres.
J. Difference Equ. Appl., 26(8), 1059-1066. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, V. F. Sirvent.
Periodic structure of transversal maps on sum-free products of spheres.
J. Difference Equ. Appl., 25(5), 619-629. 2020. [DOI]
PreprintAbstractPreprint at DDDUAB

J. Llibre, D. J. Tonon, M. Q. Velter.
Crossing periodic orbits via first integrals.
Internat. J. Bifur. Chaos Appl. Sci. Engrg., 30(11), 2050163 (9 pages). 2020. [DOI]
PreprintAbstractPreprint at DDDUAB