Borel summability: application to the anharmonic oscillator S Graffi, V Grecchi, B Simon Physics Letters B 32 (7), 631-634, 1970 | 301 | 1970 |

Perturbation theory of odd anharmonic oscillators E Caliceti, S Graffi, M Maioli Communications in Mathematical Physics 75 (1), 51-66, 1980 | 261 | 1980 |

Resonances in Stark effect and perturbation theory S Graffi, V Grecchi Communications in Mathematical Physics 62 (1), 83-96, 1978 | 119 | 1978 |

Mean-field-and classical limit of many-body Schrödinger dynamics for bosons J Fröhlich, S Graffi, S Schwarz Communications in mathematical physics 271 (3), 681-697, 2007 | 110 | 2007 |

Classical limit of the quantized hyperbolic toral automorphisms M Degli Esposti, S Graffi, S Isola Communications in Mathematical Physics 167 (3), 471-507, 1995 | 98 | 1995 |

Time Quasi-Periodic Unbounded Perturbations¶ of Schrödinger Operators and KAM Methods D Bambusi, S Graffi Communications in Mathematical Physics 219 (2), 465-480, 2001 | 97 | 2001 |

Long time semiclassical approximation of quantum flows: a proof of the Ehrenfest time D Bambusi, S Graffi, T Paul Asymptotic analysis 21 (2), 149-160, 1999 | 75 | 1999 |

Spectra of PT-symmetric operators and perturbation theory E Caliceti, S Graffi, J Sjöstrand Journal of Physics A: Mathematical and General 38 (1), 185, 2004 | 71 | 2004 |

Numerical and quantitative analysis G Fichera Pitman, 1978 | 71 | 1978 |

The Schrödinger equation and canonical perturbation theory S Graffi, T Paul Communications in mathematical physics 108 (1), 25-40, 1987 | 67 | 1987 |

Borel summability and indeterminacy of the Stieltjes moment problem: application to the anharmonic oscillators S Graffi, V Grecchi Journal of Mathematical Physics 19 (5), 1002-1006, 1978 | 57 | 1978 |

Summation methods for the perturbation series of the generalized anharmonic oscillator S Graffi, V Grecchi, G Turchetti Il Nuovo Cimento B (1971-1996) 4 (2), 313-340, 1971 | 53 | 1971 |

Exterior complex scaling and the AC-Stark effect in a Coulomb field S Graffi, K Yajima Communications in mathematical physics 89 (2), 277-301, 1983 | 52 | 1983 |

1/R expansion for H 2+: Calculation of exponentially small terms and asymptotics J Cížek, RJ Damburg, S Graffi, V Grecchi, EM Harrell, JG Harris, S Nakai, ... Physical Review A 33 (1), 12, 1986 | 50 | 1986 |

Mathematical aspects of quantum maps M Degli Esposti, S Graffi The mathematical aspects of quantum maps, 49-90, 2003 | 48 | 2003 |

Resonances and convergence of perturbation theory for N-body atomic systems in external AC-electric field S Graffi, V Grecchi, HJ Silverstone Annales de l'IHP Physique théorique 42 (3), 215-234, 1985 | 48 | 1985 |

Mean-field approximation of quantum systems and classical limit S Graffi, A Martinez, M Pulvirenti Mathematical Models and Methods in Applied Sciences 13 (01), 59-73, 2003 | 47 | 2003 |

Resonances in the Stark effect of atomic systems S Graffi, V Grecchi Communications in Mathematical Physics 79 (1), 91-109, 1981 | 46 | 1981 |

Perturbation theory of symmetric Hamiltonians E Caliceti, F Cannata, S Graffi Journal of Physics A: Mathematical and General 39 (32), 10019, 2006 | 45 | 2006 |

A matrix continued-fraction solution for the anharmonic-oscillator eigenvalues S Graffi, V Grecchi Lettere al Nuovo Cimento (1971-1985) 12 (11), 425-431, 1975 | 42 | 1975 |