@book{UBHD-68933686,
  author={Koch, Herbert and Tataru, Daniel},
  title={Sharp counter examples in unique continuation for second-order elliptic equations},
  publisher={IWR},
  address={Heidelberg},
  year={2001},
  pages={15 S.},
  language={eng},
  number={ARRAY(0x560ffde0f4c8)},
  series={Preprint / Interdisziplin{\"a}res Zentrum f{\"u}r Wissenschaftliches Rechnen, IWR},
  note={Auch im Internet unter der Adresse www.iwr.uni-heidelberg.de/sfb/Preprints.html verf{\"u}gbar},
}