Metamorphoses of Hamiltonian systems with symmetries K Efstathiou Springer, 2005 | 121 | 2005 |

Efficient structure-aware selection techniques for 3D point cloud visualizations with 2DOF input L Yu, K Efstathiou, P Isenberg, T Isenberg IEEE Transactions on Visualization and Computer Graphics 18 (12), 2245-2254, 2012 | 93 | 2012 |

Global bending quantum number and the absence of monodromy in the HCN↔ CNH molecule K Efstathiou, M Joyeux, DA Sadovskii Physical Review A 69 (3), 032504, 2004 | 72 | 2004 |

CAST: Effective and efficient user interaction for context-aware selection in 3D particle clouds L Yu, K Efstathiou, P Isenberg, T Isenberg IEEE transactions on visualization and computer graphics 22 (1), 886-895, 2015 | 64 | 2015 |

Fractional monodromy in the 1:− 2 resonance K Efstathiou, RH Cushman, DA Sadovskií Advances in Mathematics 209 (1), 241-273, 2007 | 44 | 2007 |

Hamiltonian Hopf bifurcation of the hydrogen atom in crossed fields K Efstathiou, RH Cushman, DA Sadovskiı Physica D: Nonlinear Phenomena 194 (3-4), 250-274, 2004 | 42 | 2004 |

Normalization and global analysis of perturbations of the hydrogen atom K Efstathiou, DA Sadovskii Reviews of Modern Physics 82 (3), 2099, 2010 | 38 | 2010 |

Classification of perturbations of the hydrogen atom by small static electric and magnetic fields K Efstathiou, DA Sadovskií, BI Zhilinskií Proceedings of the Royal Society A: Mathematical, Physical and Engineering …, 2007 | 33 | 2007 |

Perturbations of the 1: 1: 1 resonance with tetrahedral symmetry: a three degree of freedom analogue of the two degree of freedom Hénon–Heiles Hamiltonian K Efstathiou, DA Sadovskií Nonlinearity 17 (2), 415, 2003 | 31 | 2003 |

Persistent homology of the cosmic web–I. Hierarchical topology in ΛCDM cosmologies G Wilding, K Nevenzeel, R van de Weygaert, G Vegter, P Pranav, ... Monthly Notices of the Royal Astronomical Society 507 (2), 2968-2990, 2021 | 27 | 2021 |

The topology associated with cusp singular points K Efstathiou, A Giacobbe Nonlinearity 25 (12), 3409, 2012 | 27 | 2012 |

Most Typical Resonant Perturbation of the Hydrogen Atom by Weak Electric and Magnetic Fields K Efstathiou, OV Lukina, DA Sadovskií Physical Review Letters 101 (25), 253003, 2008 | 27 | 2008 |

Heteroclinic cycles between unstable attractors H Broer, K Efstathiou, E Subramanian Nonlinearity 21 (6), 1385, 2008 | 27 | 2008 |

Integrable Hamiltonian systems with swallowtails K Efstathiou, D Sugny Journal of Physics A: Mathematical and Theoretical 43 (8), 085216, 2010 | 25 | 2010 |

Analysis of Rotation--Vibration Relative Equilibria on the Example of a Tetrahedral Four Atom Molecule K Efstathiou, DA Sadovskií, BI Zhilinskii SIAM Journal on Applied Dynamical Systems 3 (3), 261-351, 2004 | 25 | 2004 |

Robustness of unstable attractors in arbitrarily sized pulse-coupled networks with delay H Broer, K Efstathiou, E Subramanian Nonlinearity 21 (1), 13, 2007 | 24 | 2007 |

Fractional bidromy in the vibrational spectrum of HOCl E Assémat, K Efstathiou, M Joyeux, D Sugny Physical review letters 104 (11), 113002, 2010 | 23 | 2010 |

Escapes and recurrence in a simple Hamiltonian system G Contopoulos, K Efstathiou Celestial Mechanics and Dynamical Astronomy 88, 163-183, 2004 | 23 | 2004 |

Linear Hamiltonian Hopf bifurcation for point–group–invariant perturbations of the 1: 1: 1 resonance K Efstathiou, DA Sadovskií, RH Cushman Proceedings of the Royal Society of London. Series A: Mathematical, Physical …, 2003 | 21 | 2003 |

Monodromy of Hamiltonian systems with complexity 1 torus actions K Efstathiou, N Martynchuk Journal of Geometry and Physics 115, 104-115, 2017 | 18 | 2017 |