@article{Baumgaertel2004,
  author    = {Baumg{\"a}rtel, Hellmut},
  title     = {Lax-phillips evolutions in quantum mechanics and two-space scattering},
  issn      = {0034-4877},
  year      = {2004},
  language  = {en}
}
@article{Baumgaertel2004,
  author    = {Baumg{\"a}rtel, Hellmut},
  title     = {Lax-phillips evolutions in quantum mechanics and two-space scattering},
  issn      = {0034-4877},
  year      = {2004},
  language  = {en}
}