A remarkable spectral feature of the Schrödinger Hamiltonian of the harmonic oscillator perturbed by an attractive δ′-interaction centred at the origin: double degeneracy and … S Albeverio, S Fassari, F Rinaldi Journal of Physics A: Mathematical and Theoretical 46 (38), 385305, 2013 | 58 | 2013 |

On the spectrum of the Schrdinger Hamiltonian of the one-dimensional harmonic oscillator perturbed by two identical attractive point interactions S Fassari, F Rinaldi Reports on Mathematical Physics 69 (3), 353-370, 2012 | 43 | 2012 |

The Hamiltonian of the harmonic oscillator with an attractive-interaction centred at the origin as approximated by the one with a triple of attractive-interactions S Albeverio, S Fassari, F Rinaldi Journal of Physics A: Mathematical and Theoretical 49 (2), 025302, 2015 | 38 | 2015 |

On the spectrum of the Schrödinger Hamiltonian with a particular configuration of three one-dimensional point interactions S Fassari, F Rinaldi Reports on Mathematical Physics 64 (3), 367-393, 2009 | 32 | 2009 |

The discrete spectrum of the spinless one-dimensional Salpeter Hamiltonian perturbed by δ-interactions* S Albeverio, S Fassari, F Rinaldi Journal of Physics A: Mathematical and Theoretical 48 (18), 5301-5325, 2015 | 30 | 2015 |

Spectral properties of a symmetric three-dimensional quantum dot with a pair of identical attractive δ-impurities symmetrically situated around the origin II S Albeverio, S Fassari, F Rinaldi НАНОСИСТЕМЫ: ФИЗИКА, ХИМИЯ, МАТЕМАТИКА 7 (5), 803-815, 2016 | 23 | 2016 |

Spectral properties of a symmetric three-dimensional quantum dot with a pair of identical attractive δ-impurities symmetrically situated around the origin S Albeverio, S Fassari, F Rinaldi Наносистемы: физика, химия, математика 7 (2), 268-289, 2016 | 23 | 2016 |

The Birman-Schwinger operator for a parabolic quantum well in a zero-thickness layer in the presence of a two-dimensional attractive Gaussian impurity S Albeverio, S Fassari, M Gadella, LM Nieto, F Rinaldi Frontiers in Physics 7, 102, 2019 | 13 | 2019 |

Level crossings of eigenvalues of the Schrödinger Hamiltonian of the isotropic harmonic oscillator perturbed by a central point interaction in different dimensions S Fassari, M Gadella, ML Glasser, LM Nieto, F Rinaldi Наносистемы: физика, химия, математика 9 (2), 179-186, 2018 | 12 | 2018 |

Spectral properties of the two-dimensional Schrödinger Hamiltonian with various solvable confinements in the presence of a central point perturbation S Fassari, M Gadella, ML Glasser, LM Nieto, F Rinaldi Physica Scripta 94 (5), 055202, 2019 | 11 | 2019 |

On the spectrum of the one-dimensional Schrödinger Hamiltonian perturbed by an attractive Gaussian potential S Fassari, M Gadella Urquiza, LM Nieto Calzada, F Rinaldi | 11 | 2017 |

On some potential applications of the heat equation with a repulsive point interaction to derivative pricing S Fassari, F Rinaldi Rendiconti di Matematica, Serie VII Volume 31, 35-52, 2011 | 11 | 2011 |

A note on the discrete spectrum of Gaussian wells (I): the ground state energy in one dimension G Muchatibaya, S Fassari, F Rinaldi, J Mushanyu Advances in Mathematical Physics 2016 ((2016)), 4, 2016 | 8 | 2016 |

Saggi sulla metodologia della ricerca in economia R Masera Gangemi Editore spa, 2016 | 8 | 2016 |

The two lowest eigenvalues of the harmonic oscillator in the presence of a Gaussian perturbation S Fassari, LM Nieto, F Rinaldi The European Physical Journal Plus 135 (9), 728, 2020 | 6 | 2020 |

On the behaviour of the two-dimensional hamiltonian as the distance between the two centres vanishes S Fassari, I Popov, F Rinaldi Physica Scripta 95 (7), 075209, 2020 | 6 | 2020 |

Exact calculation of the trace of the Birman-Schwinger operator of the one-dimensional harmonic oscillator perturbed by an attractive Gaussian potential S Fassari, F Rinaldi Наносистемы: физика, химия, математика 10 (6), 608-615, 2019 | 6 | 2019 |

The behaviour of the three-dimensional Hamiltonian−∆+ λ [δ (x+ x0)+ δ (x− x0)] as the distance between the two centres vanishes S Albeverio, S Fassari, F Rinaldi NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2017, 8 (2), P. 153–159 8 (2 …, 2017 | 6* | 2017 |

The spectrum of the Schrödinger–Hamiltonian for trapped particles in a cylinder with a topological defect perturbed by two attractive delta interactions F Silvestro, R Fabio, V Stefano International Journal of Geometric Methods in Modern Physics 15 (08), 1850135, 2018 | 5 | 2018 |

Easy Call/Put. Guida all'analisi tecnica dei derivati finanziari e relative applicazioni in Visual C++. Con CD-ROM F Rinaldi, S Fassari Armando Editore, 2007 | 3 | 2007 |