Piecewise linear perturbations of a linear center C Buzzi, C Pessoa, J Torregrosa Discrete & Continuous Dynamical Systems-A 33 (9), 3915, 2013 | 66 | 2013 |

On the centers of the weight-homogeneous polynomial vector fields on the plane J Llibre, C Pessoa arXiv preprint arXiv:0901.4971, 2009 | 25 | 2009 |

Homogeneous polynomial vector fields of degree 2 on the 2--dimensional sphere J Llibre, C Pessoa extracta mathematicae 21 (2), 167-190, 2006 | 20 | 2006 |

Centers on center manifolds in the Lü system A Mahdi, C Pessoa, DS Shafer Physics Letters A 375 (40), 3509-3511, 2011 | 19 | 2011 |

Invariant circles for homogeneous polynomial vector fields on the 2-dimensional sphere J Llibre, C Pessoa Rendiconti del Circolo Matematico di Palermo 55 (1), 63, 2006 | 18 | 2006 |

The Hopf bifurcation in the Shimizu–Morioka system J Llibre, C Pessoa Nonlinear Dynamics 79 (3), 2197-2205, 2015 | 15 | 2015 |

Phase portraits for quadratic homogeneous polynomial vector fields on J Llibre, C Pessoa Rendiconti del Circolo Matematico di Palermo 58 (3), 361-406, 2009 | 12 | 2009 |

Dynamics at infinity and other global dynamical aspects of Shimizu–Morioka equations M Messias, MRA Gouveia, C Pessoa Nonlinear Dynamics 69 (1-2), 577-587, 2012 | 10 | 2012 |

On the limit cycles for a class of continuous piecewise linear differential systems with three zones MFS Lima, C Pessoa, WF Pereira International Journal of Bifurcation and Chaos 25 (04), 1550059, 2015 | 6 | 2015 |

A class of reversible quadratic polynomial vector fields on S2 WF Pereira, C Pessoa Journal of mathematical analysis and applications 371 (1), 203-209, 2010 | 6 | 2010 |

Homogeneous polynomial vector fields on the 2-dimensional sphere CG Pessoa Universitat Auṭnoma de Barcelona, 2006 | 6 | 2006 |

A hybrid symbolic-numerical approach to the center-focus problem A Mahdi, C Pessoa, JD Hauenstein Journal of Symbolic Computation 82, 57-73, 2017 | 5 | 2017 |

Bifurcations at infinity, invariant algebraic surfaces, homoclinic and heteroclinic orbits and centers of a new Lorenz-like chaotic system MRA Gouveia, M Messias, C Pessoa Nonlinear Dynamics 84 (2), 703-713, 2016 | 5 | 2016 |

Piecewise smooth dynamical systems: Persistence of periodic solutions and normal forms MRA Gouveia, J Llibre, DD Novaes, C Pessoa Journal of Differential Equations 260 (7), 6108-6129, 2016 | 4 | 2016 |

Limit cycles bifurcating from a period annulus in continuous piecewise linear differential systems with three zones MFS Lima, C Pessoa, WF Pereira International Journal of Bifurcation and Chaos 27 (02), 1750022, 2017 | 2 | 2017 |

On the reversible quadratic polynomial vector fields on S2 WF Pereira, C Pessoa Journal of Mathematical Analysis and Applications 396 (2), 455-465, 2012 | 2 | 2012 |

Piecewise smooth vector fields in R3 at infinity C Pessoa, DJ Tonon Journal of Mathematical Analysis and Applications 427 (2), 841-855, 2015 | 1 | 2015 |

Stable piecewise polynomial vector fields C Pessoa, J Sotomayor arXiv preprint arXiv:1201.1011, 2012 | 1 | 2012 |

Homogeneous Polynomial Vector Fields on S2 CG Pessoa | 1 | 2006 |

Phase portraits of Bernoulli quadratic polynomial differential systems J Llibre, WF Pereira, C Pessoa Electronic Journal of Differential Equations 2020 (48), 1-19, 2020 | | 2020 |