| Geometry of quantum principal bundles I M Durdević Communications in Mathematical Physics 175 (3), 457-520, 1996 | 138* | 1996 |
| Weyl function and spectral properties of self-adjoint extensions JF Brasche, M Malamud, H Neidhardt Integral Equations and Operator Theory 43 (3), 264-289, 2002 | 132 | 2002 |
| Potential approximations to δ': an inverse Klauder phenomenon with norm-resolvent convergence P Exner, H Neidhardt, VA Zagrebnov Communications in Mathematical Physics 224 (3), 593-612, 2001 | 124 | 2001 |
| Scattering matrices and Weyl functions J Behrndt, MM Malamud, H Neidhardt Proceedings of the London Mathematical Society 97 (3), 568-598, 2008 | 102 | 2008 |
| On the spectrum of the lattice spin-boson Hamiltonian for any coupling: 1D case M Muminov, H Neidhardt, T Rasulov Journal of Mathematical Physics 56 (5), 2015 | 93 | 2015 |
| Sturm–Liouville boundary value problems with operator potentials and unitary equivalence M Malamud, H Neidhardt Journal of Differential Equations 252 (11), 5875-5922, 2012 | 72 | 2012 |
| On error estimates for the Trotter–Kato product formula H Neidhardt, VA Zagrebnov Letters in Mathematical Physics 44 (3), 169-186, 1998 | 70 | 1998 |
| On abstract linear evolution equations, I H Neidhardt Mathematische Nachrichten 103 (1), 283-298, 1981 | 70 | 1981 |
| Trotter–Kato product formula and operator-norm convergence H Neidhardt, VA Zagrebnov Communications in Mathematical Physics 205 (1), 129-159, 1999 | 66 | 1999 |
| Spectral theory of infinite quantum graphs P Exner, A Kostenko, M Malamud, H Neidhardt Annales Henri Poincaré 19 (11), 3457-3510, 2018 | 61 | 2018 |
| On the unitary equivalence of absolutely continuous parts of self-adjoint extensions MM Malamud, H Neidhardt Journal of Functional Analysis 260 (3), 613-638, 2011 | 60 | 2011 |
| Inverse spectral theory for symmetric operators with several gaps: scalar-type Weyl functions S Albeverio, JF Brasche, MM Malamud, H Neidhardt Journal of Functional Analysis 228 (1), 144-188, 2005 | 55 | 2005 |
| Linear non-autonomous Cauchy problems and evolution semigroups H Neidhardt, VA Zagrebnov | 52 | 2009 |
| Trace formulas for additive and non-additive perturbations M Malamud, H Neidhardt Advances in Mathematics 274, 736-832, 2015 | 47 | 2015 |
| Spectral Shift Function and Hilbert‐Schmidt Perturbation: Extensions of Some Work of LS Koplienko H Neidhardt Mathematische Nachrichten 138 (1), 7-25, 1988 | 47 | 1988 |
| Evanescent channels and scattering in cylindrical nanowire heterostructures PN Racec, ER Racec, H Neidhardt Physical Review B—Condensed Matter and Materials Physics 79 (15), 155305, 2009 | 43 | 2009 |
| Scattering matrices and Dirichlet-to-Neumann maps J Behrndt, MM Malamud, H Neidhardt Journal of Functional Analysis 273 (6), 1970-2025, 2017 | 42 | 2017 |
| On 1–dimensional dissipative Schrödinger–type operators their dilations and eigenfunction expansions HC Kaiser, H Neidhardt, J Rehberg Mathematische Nachrichten 252 (1), 51-69, 2003 | 37 | 2003 |
| Fractional powers of self-adjoint operators and Trotter-Kato product formula H Neidhardt, VA Zagrebnov Integral Equations and Operator Theory 35 (2), 209-231, 1999 | 37 | 1999 |
| On the summability of the spectral shift function for pair of contractions and dissipative operators VM Adamjan, H Neidhardt Journal of Operator Theory, 187-205, 1990 | 37 | 1990 |
