@book{AdamyanNeidhardt1996,
  author    = {Adamyan, Vadim M. and Neidhardt, Hagen},
  title     = {On the absolutely continuous subspace for non-selfadjoint operators},
  series = {Preprint / SFB 288, Differentialgeometrie und Quantenphysik},
  volume    = {207},
  journal   = {Preprint / SFB 288, Differentialgeometrie und Quantenphysik},
  address   = {Berlin},
  year      = {1996},
  language  = {en}
}
@book{AdamyanNeidhardt1996,
  author    = {Adamyan, Vadim M. and Neidhardt, Hagen},
  title     = {On the absolutely continuous subspace for contractions and dissipative operators},
  series = {Preprint / SFB 288, Differentialgeometrie und Quantenphysik},
  volume    = {205},
  journal   = {Preprint / SFB 288, Differentialgeometrie und Quantenphysik},
  address   = {Berlin},
  year      = {1996},
  language  = {en}
}