The analytic theory of matrix orthogonal polynomials D Damanik, A Pushnitski, B Simon arXiv preprint arXiv:0711.2703, 2007 | 180 | 2007 |

Spectral shift function, amazing and multifaceted MS Birman, AB Pushnitski Integral Equations and Operator Theory 30 (2), 191-199, 1998 | 56 | 1998 |

Spectral shift function in strong magnetic fields V Bruneau, A Pushnitski, G Raikov St. Petersburg Mathematical Journal 16 (1), 181-209, 2005 | 52 | 2005 |

Spectral shift function in strong magnetic fields V Bruneau, A Pushnitski, G Raikov St. Petersburg Mathematical Journal 16 (1), 181-209, 2005 | 52 | 2005 |

Representation for the spectral shift function for perturbations of a definite sign AB Pushnitski St.Petersburg Mathematical Journal 9 (6), 1181-1194, 1998 | 48 | 1998 |

The spectral shift function and the invariance principle A Pushnitski Journal of Functional Analysis 183 (2), 269-320, 2001 | 43 | 2001 |

Non-Weyl resonance asymptotics for quantum graphs EB Davies, A Pushnitski Analysis & PDE 4 (5), 729-756, 2012 | 39 | 2012 |

Eigenvalue clusters of the Landau Hamiltonian in the exterior of a compact domain A Pushnitski, G Rozenblum arXiv preprint arXiv:0707.4297, 2007 | 36 | 2007 |

On the Koplienko spectral shift function, I. Basics F Gesztesy, A Pushnitski, B Simon Journal of Mathematical Physics, Analysis, Geometry 4 (1), 63-107, 2008 | 33 | 2008 |

Spectral asymptotics of Pauli operators and orthogonal polynomials in complex domains N Filonov, A Pushnitski Communications in mathematical physics 264 (3), 759-772, 2006 | 33 | 2006 |

A trace formula and high-energy spectral asymptotics for the perturbed Landau Hamiltonian E Korotyaev, A Pushnitski Journal of Functional Analysis 217 (1), 221-248, 2004 | 33 | 2004 |

Asymptotic density of eigenvalue clusters for the perturbed Landau Hamiltonian A Pushnitski, G Raikov, C Villegas-Blas Communications in Mathematical Physics 320 (2), 425-453, 2013 | 24 | 2013 |

Spectral shift function of the Schrodinger operator in the large coupling constant limit AB Pushnitski Funktsional. Anal. i Prilozhen 36, 93-95, 2002 | 24 | 2002 |

Spectral shift function of the Schrödinger operator in the large coupling constant limit A Pushnitski Communications in Partial Differential Equations 25 (3-4), 703-736, 2000 | 24 | 2000 |

Spectral shift function of the Schrödinger operator in the large coupling constant limit A Pushnitski Communications in Partial Differential Equations 25 (3-4), 703-736, 2000 | 24 | 2000 |

Trace formulae and high energy asymptotics for Stark operator EL Korotyaev, AB Pushnitski Communications in PDE 28 (3&4), 817-842, 2003 | 20 | 2003 |

The scattering matrix and the differences of spectral projections A Pushnitski Bulletin London Mathematical Society 40, 227-238, 2008 | 19* | 2008 |

The spectral flow, the Fredholm index, and the spectral shift function A Pushnitski arXiv preprint arXiv:0711.0089, 2007 | 18 | 2007 |

Point spectrum on a continuous spectrum for weakly perturbed Stark type operators S Naboko, A Pushnitski Functional analysis and its applications 29 (4), 248-257, 1995 | 15 | 1995 |

The spectral density of the scattering matrix for high energies D Bulger, A Pushnitski Communications in Mathematical Physics 316 (3), 693-704, 2012 | 13 | 2012 |