Foundations of mechanics R Abraham, JE Marsden Benjamin/Cummings Publishing Company, 1978 | 8407* | 1978 |

Global aspects of classical integrable systems RH Cushman, LM Bates Birkhauser-Verlag, Basel, 1997 | 755 | 1997 |

A universal reduction procedure for Hamiltonian group actions JM Arms, RH Cushman, MJ Gotay The geometry of Hamiltonian systems, 33-51, 1991 | 200 | 1991 |

The quantum mechanical spherical pendulum R Cushman, JJ Duistermaat Bulletin (New Series) of the American Mathematical Society 19 (2), 475-479, 1988 | 170 | 1988 |

Nilpotent Normal Forms and Representation Theory of Sl (2, R) R Cushman, JA Sanders Contemporary Mathematics 56, 31-51, 1986 | 139 | 1986 |

Monodromy in the hydrogen atom in crossed fields RH Cushman, DA Sadovskiı Physica D: Nonlinear Phenomena 142 (1-2), 166-196, 2000 | 132 | 2000 |

Conjugacy classes in linear groups N Burgoyne, R Cushman Journal of algebra 44 (2), 339-362, 1977 | 120 | 1977 |

Reduction of the semisimple 1: 1 resonance R Cushman, DL Rod Physica D: Nonlinear Phenomena 6 (1), 105-112, 1982 | 95 | 1982 |

Molecule as a Quantum Realization of the Resonant Swing-Spring with Monodromy RH Cushman, HR Dullin, A Giacobbe, DD Holm, M Joyeux, P Lynch, ... Physical review letters 93 (2), 024302, 2004 | 89 | 2004 |

Geometry of nonholonomic constraints R Cushman, D Kemppainen, J Śniatycki, L Bates Reports on Mathematical Physics 36 (2-3), 275-286, 1995 | 83 | 1995 |

Non-hamiltonian monodromy R Cushman, JJ Duistermaat Journal of Differential Equations 172 (1), 42-58, 2001 | 78* | 2001 |

Normal forms for real linear Hamiltonian systems with purely imaginary eigenvalues N Burgoyne, R Cushman Celestial mechanics 8 (4), 435-443, 1974 | 75 | 1974 |

Reduction, Brouwer's Hamiltonian, and the critical inclination R Cushman Celestial mechanics 31 (4), 401-429, 1983 | 71 | 1983 |

The twisting tennis racket MS Ashbaugh, CC Chicone, RH Cushman Journal of Dynamics and differential Equations 3 (1), 67-85, 1991 | 64 | 1991 |

Differential structure of orbit spaces R Cushman, J Śniatycki Canadian Journal of Mathematics 53 (4), 715-755, 2001 | 63 | 2001 |

Geometry of the energy momentum mapping of the spherical pendulum R Cushman CWI Newsletter, 4-18, 1983 | 62 | 1983 |

Geometry of Nonholonomically Constrained Systems R Cushman, H Duistermaat, J Śniatycki World Scientific, 2010 | 61 | 2010 |

A survey of invariant theory applied to normal forms of vectorfields with nilpotent linear part R Cushman, JA Sanders Institute for Mathematics and Its Applications 19, 82, 1990 | 61* | 1990 |

A survey of normalization techniques applied to perturbed Keplerian systems RH Cushman Dynamics reported, 54-112, 1992 | 60 | 1992 |

Monodromy in perturbed Kepler systems: hydrogen atom in crossed fields RH Cushman, DA Sadovskii EPL (Europhysics Letters) 47 (1), 1, 1999 | 59 | 1999 |