@article{Zagrebnov2020,
  author    = {Zagrebnov, Valentin},
  title     = {Trotter product formula on Hilbert and Banach spaces for operator-norm convergence},
  series = {Lectures in pure and applied mathematics},
  journal   = {Lectures in pure and applied mathematics},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-86956-485-2},
  issn      = {2199-4951},
  doi       = {10.25932/publishup-47197},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471971},
  pages     = {23 -- 34},
  year      = {2020},
  language  = {en}
}
@article{NeidhardtZagrebnov1996,
  author    = {Neidhardt, Hagen and Zagrebnov, Valentin A.},
  title     = {Towards the right Hamiltonians for singular perturbations via regularization and extension theory},
  year      = {1996},
  language  = {en}
}
@book{NeidhardtZagrebnov1994,
  author    = {Neidhardt, Hagen and Zagrebnov, Valentin A.},
  title     = {Mathematical results in quantum mechanics : international conference in Blossin (Germany), May 17 - 21, 1993},
  series = {Operator Theory},
  volume    = {70},
  journal   = {Operator Theory},
  editor    = {Demuth, Michael and Exner, Pavel},
  publisher = {Birkh{\"a}user},
  address   = {Basel},
  pages     = {X, 356 S.},
  year      = {1994},
  language  = {en}
}
@article{NeidhardtZagrebnov1998,
  author    = {Neidhardt, Hagen and Zagrebnov, Valentin A.},
  title     = {On operator-norm convergence of the Trotter-Kato product formula},
  year      = {1998},
  language  = {en}
}
@article{NeidhardtZagrebnov1998,
  author    = {Neidhardt, Hagen and Zagrebnov, Valentin A.},
  title     = {Does each symmetric operator have a stability domain?},
  year      = {1998},
  language  = {en}
}
@article{NeidhardtZagrebnov1998,
  author    = {Neidhardt, Hagen and Zagrebnov, Valentin A.},
  title     = {On error estimates for Trotter-Product formulas.},
  year      = {1998},
  language  = {en}
}
@article{NeidhardtZagrebnov1998,
  author    = {Neidhardt, Hagen and Zagrebnov, Valentin A.},
  title     = {On semibounded restrictions of selfadjoint operators},
  year      = {1998},
  language  = {en}
}
@article{NeidhardtZagrebnov1998,
  author    = {Neidhardt, Hagen and Zagrebnov, Valentin A.},
  title     = {Trotter-Kato product formula and symmetrically-normed ideals},
  year      = {1998},
  language  = {en}
}
@article{NeidhardtZagrebnov1994,
  author    = {Neidhardt, Hagen and Zagrebnov, Valentin A.},
  title     = {Singular perturbations, regularization and extension theory},
  year      = {1994},
  language  = {en}
}
@article{NeidhardtZagrebnov1997,
  author    = {Neidhardt, Hagen and Zagrebnov, Valentin A.},
  title     = {On the right Hamiltonian for the singular perturbations : general theory},
  year      = {1997},
  language  = {en}
}