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A. L. Rodero.
Structural stability, centers and limit cycles for smooth and nonsmooth tridimensional vector fields with invariant bidimensional spheres.
PhD thesis, Universidade Estadual Paulista, Sao Jose do Rio Preto (Brazil), February, 2022. (In Portuguese)

D. Rojas.
Oscil·ladors en ressonància.
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D. Rojas, P. J. Torres.
Periodic bouncing solutions of the Lazer-Solimini equation with weak repulsive singularity.
Nonlinear Anal. Real World Appl., 64, 103441:1-13. 2022. [DOI]
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I. Sánchez Sánchez, J. Torregrosa.
Hopf bifurcation in 3-dimensional polynomial vector fields.
Commun. Nonlinear Sci. Numer. Simul., 105, 106068:1-13. 2022. [DOI]
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Y. Villanueva, J. Llibre, R. Euzébio.
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Bull. Sci. Math., 179, 103173:1-14. 2022. [DOI]
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M. Alberich-Carramiñana, A. Ferragut, J. Llibre.
Quadratic planar differential systems with algebraic limit cycles via quadratic plane Cremona maps.
Adv. Math., 389, 107924:1-38. 2021. [DOI]
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Ll. Alsedà, S. Borrós.
An algorithm to compute rotation intervals of circle maps.
Commun. Nonlinear Sci. Numer. Simul., 102, 105915:1-18. 2021. [DOI]
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M. E. Anacleto, J. Llibre, C. Valls, C. Vidal.
Limit cycles of discontinuous piecewise differential systems formed by linear centers in $R^2$ and separated by two circles.
Nonlinear Anal. Real World Appl., 60, 103281. 2021. [DOI]
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J. C. Artés, J. Llibre, D. Schlomiuk, N. Vulpe.
Invariant conditions for phase portraits of quadratic systems with complex conjugate invariant lines meeting at a finite point.
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J. C. Artés, J. Llibre, D. Schlomiuk, N. Vulpe.
Geometric configurations of singularities of planar polynomial differential systems. A global classification in the quadratic case.
Birkhäuser, 2021.
Link at publisherContents

J. C. Artés, M. C. Mota, A. C. Rezende.
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J. C. Artés, M. C. Mota, A. C. Rezende.
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J. C. Artés, M. C. Mota, A. C. Rezende.
Quadratic differential systems with a finite saddle-node and an infinite saddle-node (1,1) SN - (B).
Internat. J. Bifur. Chaos Appl. Sci. Engrg., 31(9), 2130026 (110 pages). 2021. [DOI]
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J. C. Avila, M. Corbera, M. Frías-Armenta.
Configuration of zeros of isochronous vector fields of degree 5.
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W. Aziz, A. Amen, C. Pantazi.
Integrability and linearizability of a family of three-dimensional quadratic systems.
Dyn. Syst., 36(2), 317-331. 2021. [DOI]
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W. Aziz, C. J. Christopher, J. Llibre, C. Pantazi.
Three-dimensional Lotka-Volterra systems with 3:-1:2-resonance.
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A. Bakhshalizadeh, J. Llibre.
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K. Banerjee, X. Buff, J. Canela, A. Epstein.
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Nonlinearity, 34(12), 8174. 2021. [DOI]
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E. Barrabés, J. M. Cors, A. C. Fernandes, C. Vidal.
Convexity and symmetry of central configurations in the five-body problem: Lagrange plus two.
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