Lorentzian spin foam amplitudes: graphical calculus and asymptotics JW Barrett, RJ Dowdall, WJ Fairbairn, F Hellmann, R Pereira Classical and Quantum Gravity 27 (16), 165009, 2010 | 239 | 2010 |

Asymptotic analysis of the Engle–Pereira–Rovelli–Livine four-simplex amplitude JW Barrett, RJ Dowdall, WJ Fairbairn, H Gomes, F Hellmann Journal of Mathematical Physics 50 (11), 112504, 2009 | 235 | 2009 |

Holonomy spin foam models: definition and coarse graining B Bahr, B Dittrich, F Hellmann, W Kaminski Physical Review D 87 (4), 044048, 2013 | 90 | 2013 |

Survivability of deterministic dynamical systems F Hellmann, P Schultz, C Grabow, J Heitzig, J Kurths Scientific reports 6 (1), 1-12, 2016 | 77 | 2016 |

Network-induced multistability through lossy coupling and exotic solitary states F Hellmann, P Schultz, P Jaros, R Levchenko, T Kapitaniak, J Kurths, ... Nature communications 11 (1), 592, 2020 | 74 | 2020 |

Operator spin foam models B Bahr, F Hellmann, W Kamiński, M Kisielowski, J Lewandowski Classical and quantum gravity 28 (10), 105003, 2011 | 67 | 2011 |

Quantum gravity asymptotics from the SU (2) 15j-symbol JW Barrett, WJ Fairbairn, F Hellmann International Journal of Modern Physics A 25 (14), 2897-2916, 2010 | 63 | 2010 |

Holonomy spin foam models: asymptotic geometry of the partition function F Hellmann, W Kaminski Journal of High Energy Physics 2013 (10), 1-63, 2013 | 60 | 2013 |

The impact of model detail on power grid resilience measures S Auer, K Kleis, P Schultz, J Kurths, F Hellmann The European Physical Journal Special Topics 225, 609-625, 2016 | 53 | 2016 |

Stability of synchrony against local intermittent fluctuations in tree-like power grids S Auer, F Hellmann, M Krause, J Kurths Chaos: An Interdisciplinary Journal of Nonlinear Science 27 (12), 127003, 2017 | 48 | 2017 |

Deciphering the imprint of topology on nonlinear dynamical network stability J Nitzbon, P Schultz, J Heitzig, J Kurths, F Hellmann New Journal of Physics 19 (3), 033029, 2017 | 47 | 2017 |

Asymptotics of 4d spin foam models JW Barrett, RJ Dowdall, WJ Fairbairn, H Gomes, F Hellmann, R Pereira General Relativity and Gravitation 43, 2421-2436, 2011 | 47 | 2011 |

Collective nonlinear dynamics and self-organization in decentralized power grids D Witthaut, F Hellmann, J Kurths, S Kettemann, H Meyer-Ortmanns, ... Reviews of modern physics 94 (1), 015005, 2022 | 43 | 2022 |

Asymptotic analysis of the Ponzano–Regge model for handlebodies RJ Dowdall, H Gomes, F Hellmann Journal of Physics A: Mathematical and Theoretical 43 (11), 115203, 2010 | 39 | 2010 |

Multiple-event probability in general-relativistic quantum mechanics F Hellmann, M Mondragon, A Perez, C Rovelli Physical Review D 75 (8), 084033, 2007 | 38 | 2007 |

Decoherence of a two-qubit system away from perfect symmetry MJ Storcz, F Hellmann, C Hrelescu, FK Wilhelm Physical Review A 72 (5), 052314, 2005 | 36 | 2005 |

Expansions in spin foam cosmology F Hellmann Physical Review D 84 (10), 103516, 2011 | 25 | 2011 |

Geometric asymptotics for spin foam lattice gauge gravity on arbitrary triangulations F Hellmann, W Kaminski arXiv preprint arXiv:1210.5276, 2012 | 20 | 2012 |

A summary of the asymptotic analysis for the EPRL amplitude JW Barrett, RJ Dowdall, WJ Fairbairn, H Gomes, F Hellmann AIP Conference Proceedings 1196 (1), 36-43, 2009 | 19 | 2009 |

Introduction to Focus Issue: Dynamics of modern power grids M Anvari, F Hellmann, X Zhang Chaos: An Interdisciplinary Journal of Nonlinear Science 30 (6), 063140, 2020 | 18 | 2020 |